Disappearing Mapped Drives

January 10, 2008

I am having a problem with some users where a mapped network drive will

mysteriously disappear.

All clients are running Windows XP SP2 (fully patched)

Shares are hosted on Windows Server 2003 R2, which is also a DC and a DFS

root (also fully patched)

We have a simple AD network, with a login batch file script to connect

network drives:

net use T: /delete /y

net use U: /delete /y

net use T: \\hebb.proshow.com\Shares /PERSISTENT:YES

net use U: \\WPSR-DC1\Home /PERSISTENT:YES

I have about 30 client computers, so far this problem has only happened on 3

of them (one time each, on three different days and at different times), and

in all cases it was only the T: drive that disappeared. Two of them were

desktops, one was a laptop. The disappearing just happened randomly, some

time after the login (they were connected and working fine, then poof -

gone). The network share itself (via UNC) was working fine. The use doing

a logoff/logon reconnected them.

We have very little in the way of group policy settings - everthing is

pretty much as per the default domain policy except for this script,

password settings, WSUS settings and turning on offline file cache

encryption. Speaking of offline files, one of the users effected did have

some directories in the share pinned for make available offline, but the

other two users did not. You will note that the share is disappearing is a

DFS share, I am not sure if this is related to the problem. I use

/persistent:yes because many users are on laptops (using offline files), so

I don't want the drives to disconnect if the user does a reboot while not on

the network. As mentioned above, only 3 of 30 users have had this happen,

and only once each. There were no network connectivity problems, and all

users have the exact same security permissions on the server. This seems

to be a new problem, as prior to this week I have never seen it / had it

reported.

Any ideas what might be causing this, or how I could even troubleshoot it

further?

Thanks

/-Tim

January 10, 2008

Re: Disappearing Mapped Drives

"Tim Lang" <Tim.Lang@nospam.nospam> wrote in message

news:173786B4-38E4-4154-B519-17169F10A145@microsoft.com...

>I am having a problem with some users where a mapped network drive will

>mysteriously disappear.

>

> All clients are running Windows XP SP2 (fully patched)

> Shares are hosted on Windows Server 2003 R2, which is also a DC and a DFS

> root (also fully patched)

>

> We have a simple AD network, with a login batch file script to connect

> network drives:

>

> net use T: /delete /y

> net use U: /delete /y

> net use T: \\hebb.proshow.com\Shares /PERSISTENT:YES

> net use U: \\WPSR-DC1\Home /PERSISTENT:YES

>

> I have about 30 client computers, so far this problem has only happened on

> 3 of them (one time each, on three different days and at different times),

> and in all cases it was only the T: drive that disappeared. Two of them

> were desktops, one was a laptop. The disappearing just happened randomly,

> some time after the login (they were connected and working fine, then

> poof - gone). The network share itself (via UNC) was working fine. The

> use doing a logoff/logon reconnected them.

>

> We have very little in the way of group policy settings - everthing is

> pretty much as per the default domain policy except for this script,

> password settings, WSUS settings and turning on offline file cache

> encryption. Speaking of offline files, one of the users effected did have

> some directories in the share pinned for make available offline, but the

> other two users did not. You will note that the share is disappearing is

> a DFS share, I am not sure if this is related to the problem. I use

> /persistent:yes because many users are on laptops (using offline files),

> so I don't want the drives to disconnect if the user does a reboot while

> not on the network. As mentioned above, only 3 of 30 users have had this

> happen, and only once each. There were no network connectivity

> problems, and all users have the exact same security permissions on the

> server. This seems to be a new problem, as prior to this week I have

> never seen it / had it reported.

>

> Any ideas what might be causing this, or how I could even troubleshoot it

> further?

>

> Thanks

> /-Tim

Next time it happens, don't log off - run the following commands

from a Command Prompt and watch what happens:

net use

dir T:\

dir U:\

net use T: \\hebb.proshow.com\Shares /PERSISTENT:YES

net use U: \\WPSR-DC1\Home /PERSISTENT:YES

I suspect that this will tell you what's causing the problem.

January 11, 2008

Re: Disappearing Mapped Drives

Thanks Pegasus - I will wait for the next time it happens and do that.

I should have mentioned in my original post that when I opened explorer on

the machines in question, the missing mapped drive (T:) did not appear

(although other mapped drives did appear as normal).

"Pegasus (MVP)" <I.can@fly.com.oz> wrote in message

news:OydLKP9UIHA.4752@TK2MSFTNGP05.phx.gbl...

>

> "Tim Lang" <Tim.Lang@nospam.nospam> wrote in message

> news:173786B4-38E4-4154-B519-17169F10A145@microsoft.com...

>>I am having a problem with some users where a mapped network drive will

>>mysteriously disappear.

>>

>> All clients are running Windows XP SP2 (fully patched)

>> Shares are hosted on Windows Server 2003 R2, which is also a DC and a DFS

>> root (also fully patched)

>>

>> We have a simple AD network, with a login batch file script to connect

>> network drives:

>>

>> net use T: /delete /y

>> net use U: /delete /y

>> net use T: \\hebb.proshow.com\Shares /PERSISTENT:YES

>> net use U: \\WPSR-DC1\Home /PERSISTENT:YES

>>

>> I have about 30 client computers, so far this problem has only happened

>> on 3 of them (one time each, on three different days and at different

>> times), and in all cases it was only the T: drive that disappeared. Two

>> of them were desktops, one was a laptop. The disappearing just happened

>> randomly, some time after the login (they were connected and working

>> fine, then poof - gone). The network share itself (via UNC) was working

>> fine. The use doing a logoff/logon reconnected them.

>>

>> We have very little in the way of group policy settings - everthing is

>> pretty much as per the default domain policy except for this script,

>> password settings, WSUS settings and turning on offline file cache

>> encryption. Speaking of offline files, one of the users effected did

>> have some directories in the share pinned for make available offline, but

>> the other two users did not. You will note that the share is

>> disappearing is a DFS share, I am not sure if this is related to the

>> problem. I use /persistent:yes because many users are on laptops (using

>> offline files), so I don't want the drives to disconnect if the user does

>> a reboot while not on the network. As mentioned above, only 3 of 30 users

>> have had this happen, and only once each. There were no network

>> connectivity problems, and all users have the exact same security

>> permissions on the server. This seems to be a new problem, as prior to

>> this week I have never seen it / had it reported.

>>

>> Any ideas what might be causing this, or how I could even troubleshoot it

>> further?

>>

>> Thanks

>> /-Tim

>

> Next time it happens, don't log off - run the following commands

> from a Command Prompt and watch what happens:

>

> net use

> dir T:\

> dir U:\

> net use T: \\hebb.proshow.com\Shares /PERSISTENT:YES

> net use U: \\WPSR-DC1\Home /PERSISTENT:YES

>

> I suspect that this will tell you what's causing the problem.

>

January 11, 2008

RE: Disappearing Mapped Drives

Dear Tim,

Thanks for posting here.

After viewing this post, I suspect the DFS server may have some problems.

Below is my analysis to this issue.

1)After re-logging in, the missing network drive returns, so we can infer

it is not a permission issue.

2) The network drive U can be redirected. which proves the application of

Group Policy is correct.

The reason why I suspect DFS server cause the issue is we can obtain

network drive U but not drive T. Moreover, network drive T is resided on

DFS server.

During my research, I notice a previous case that mentions the Anti-viruses

software running on DFS server may cause similar issue.

In order to narrow down this issue, could you please check if the

dfssrv.exe process has a relatively high utilization usage of CPU when

network drive U disappears on these three clients? If so, please exclusive

the DFS directory Anti-viruses software scanning directory and see if this

issue still persists. Additionally, please test the result using the

command-line " net use T: \\hebb.proshow.com\Shares /PERSISTENT:YES" when

network drive U disappearing.

I look forward to the reply.

I hope this helps. Have a nice day!

Sincerely

Morgan Che

Microsoft Online Support

Microsoft Global Technical Support Center

Get Secure! - http://www.microsoft.com/security

=====================================================

When responding to posts, please "Reply to Group" via your newsreader so

that others may learn and benefit from your issue.

=====================================================

This posting is provided "AS IS" with no warranties, and confers no rights.

--------------------

--->From: "Tim Lang" <Tim.Lang@nospam.nospam>

--->Subject: Disappearing Mapped Drives

--->Date: Thu, 10 Jan 2008 13:36:33 -0800

--->Lines: 45

--->Message-ID: <173786B4-38E4-4154-B519-17169F10A145@microsoft.com>

--->MIME-Version: 1.0

--->Content-Type: text/plain;

---> format=flowed;

---> charset="iso-8859-1";

---> reply-type=original

--->Content-Transfer-Encoding: 7bit

--->X-Priority: 3

--->X-MSMail-Priority: Normal

--->X-Newsreader: Microsoft Windows Mail 6.0.6001.17052

--->X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6001.17052

--->X-MS-CommunityGroup-MessageCategory:

{E4FCE0A9-75B4-4168-BFF9-16C22D8747EC}

--->X-MS-CommunityGroup-PostID: {173786B4-38E4-4154-B519-17169F10A145}

--->Newsgroups: microsoft.public.windowsxp.general

--->Path: TK2MSFTNGHUB02.phx.gbl

--->Xref: TK2MSFTNGHUB02.phx.gbl microsoft.public.windowsxp.general:160750

--->NNTP-Posting-Host: TK2MSFTNGHUB02.phx.gbl 127.0.0.1

--->X-Tomcat-NG: microsoft.public.windowsxp.general

--->

--->I am having a problem with some users where a mapped network drive will

--->mysteriously disappear.

--->

--->All clients are running Windows XP SP2 (fully patched)

--->Shares are hosted on Windows Server 2003 R2, which is also a DC and a

DFS

--->root (also fully patched)

--->

--->We have a simple AD network, with a login batch file script to connect

--->network drives:

--->

--->net use T: /delete /y

--->net use U: /delete /y

--->net use T: \\hebb.proshow.com\Shares /PERSISTENT:YES

--->net use U: \\WPSR-DC1\Home /PERSISTENT:YES

--->

--->I have about 30 client computers, so far this problem has only happened

on 3

--->of them (one time each, on three different days and at different

times), and

--->in all cases it was only the T: drive that disappeared. Two of them

were

--->desktops, one was a laptop. The disappearing just happened randomly,

some

--->time after the login (they were connected and working fine, then poof -

--->gone). The network share itself (via UNC) was working fine. The use

doing

--->a logoff/logon reconnected them.

--->

--->We have very little in the way of group policy settings - everthing is

--->pretty much as per the default domain policy except for this script,

--->password settings, WSUS settings and turning on offline file cache

--->encryption. Speaking of offline files, one of the users effected did

have

--->some directories in the share pinned for make available offline, but

the

--->other two users did not. You will note that the share is disappearing

is a

--->DFS share, I am not sure if this is related to the problem. I use

--->/persistent:yes because many users are on laptops (using offline

files), so

--->I don't want the drives to disconnect if the user does a reboot while

not on

--->the network. As mentioned above, only 3 of 30 users have had this

happen,

--->and only once each. There were no network connectivity problems, and

all

--->users have the exact same security permissions on the server. This

seems

--->to be a new problem, as prior to this week I have never seen it / had

it

--->reported.

--->

--->Any ideas what might be causing this, or how I could even troubleshoot

it

--->further?

--->

--->Thanks

--->/-Tim

--->

January 11, 2008

Re: Disappearing Mapped Drives

Great tip - I will exclude my dfsroot directory from the antivirus just to

be safe. If I can catch the problem happening live again, I will also check

on the dfssvc process.

Thanks!

/-Tim

"Morgan che(MSFT)" <v-morche@online.microsoft.com> wrote in message

news:50drq$DVIHA.5204@TK2MSFTNGHUB02.phx.gbl...

> Dear Tim,

>

> Thanks for posting here.

>

> After viewing this post, I suspect the DFS server may have some problems.

> Below is my analysis to this issue.

>

> 1)After re-logging in, the missing network drive returns, so we can infer

> it is not a permission issue.

>

> 2) The network drive U can be redirected. which proves the application of

> Group Policy is correct.

>

> The reason why I suspect DFS server cause the issue is we can obtain

> network drive U but not drive T. Moreover, network drive T is resided on

> DFS server.

>

> During my research, I notice a previous case that mentions the

> Anti-viruses

> software running on DFS server may cause similar issue.

>

> In order to narrow down this issue, could you please check if the

> dfssrv.exe process has a relatively high utilization usage of CPU when

> network drive U disappears on these three clients? If so, please exclusive

> the DFS directory Anti-viruses software scanning directory and see if this

> issue still persists. Additionally, please test the result using the

> command-line " net use T: \\hebb.proshow.com\Shares /PERSISTENT:YES" when

> network drive U disappearing.

>

> I look forward to the reply.

>

> I hope this helps. Have a nice day!

>

> Sincerely

> Morgan Che

> Microsoft Online Support

> Microsoft Global Technical Support Center

>

> Get Secure! - http://www.microsoft.com/security

> =====================================================

> When responding to posts, please "Reply to Group" via your newsreader so

> that others may learn and benefit from your issue.

> =====================================================

> This posting is provided "AS IS" with no warranties, and confers no

> rights.

>

> --------------------

> --->From: "Tim Lang" <Tim.Lang@nospam.nospam>

> --->Subject: Disappearing Mapped Drives

> --->Date: Thu, 10 Jan 2008 13:36:33 -0800

> --->Lines: 45

> --->Message-ID: <173786B4-38E4-4154-B519-17169F10A145@microsoft.com>

> --->MIME-Version: 1.0

> --->Content-Type: text/plain;

> ---> format=flowed;

> ---> charset="iso-8859-1";

> ---> reply-type=original

> --->Content-Transfer-Encoding: 7bit

> --->X-Priority: 3

> --->X-MSMail-Priority: Normal

> --->X-Newsreader: Microsoft Windows Mail 6.0.6001.17052

> --->X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6001.17052

> --->X-MS-CommunityGroup-MessageCategory:

> {E4FCE0A9-75B4-4168-BFF9-16C22D8747EC}

> --->X-MS-CommunityGroup-PostID: {173786B4-38E4-4154-B519-17169F10A145}

> --->Newsgroups: microsoft.public.windowsxp.general

> --->Path: TK2MSFTNGHUB02.phx.gbl

> --->Xref: TK2MSFTNGHUB02.phx.gbl microsoft.public.windowsxp.general:160750

> --->NNTP-Posting-Host: TK2MSFTNGHUB02.phx.gbl 127.0.0.1

> --->X-Tomcat-NG: microsoft.public.windowsxp.general

> --->

> --->I am having a problem with some users where a mapped network drive

> will

> --->mysteriously disappear.

> --->

> --->All clients are running Windows XP SP2 (fully patched)

> --->Shares are hosted on Windows Server 2003 R2, which is also a DC and a

> DFS

> --->root (also fully patched)

> --->

> --->We have a simple AD network, with a login batch file script to connect

> --->network drives:

> --->

> --->net use T: /delete /y

> --->net use U: /delete /y

> --->net use T: \\hebb.proshow.com\Shares /PERSISTENT:YES

> --->net use U: \\WPSR-DC1\Home /PERSISTENT:YES

> --->

> --->I have about 30 client computers, so far this problem has only

> happened

> on 3

> --->of them (one time each, on three different days and at different

> times), and

> --->in all cases it was only the T: drive that disappeared. Two of them

> were

> --->desktops, one was a laptop. The disappearing just happened randomly,

> some

> --->time after the login (they were connected and working fine, then

> poof -

> --->gone). The network share itself (via UNC) was working fine. The use

> doing

> --->a logoff/logon reconnected them.

> --->

> --->We have very little in the way of group policy settings - everthing is

> --->pretty much as per the default domain policy except for this script,

> --->password settings, WSUS settings and turning on offline file cache

> --->encryption. Speaking of offline files, one of the users effected did

> have

> --->some directories in the share pinned for make available offline, but

> the

> --->other two users did not. You will note that the share is disappearing

> is a

> --->DFS share, I am not sure if this is related to the problem. I use

> --->/persistent:yes because many users are on laptops (using offline

> files), so

> --->I don't want the drives to disconnect if the user does a reboot while

> not on

> --->the network. As mentioned above, only 3 of 30 users have had this

> happen,

> --->and only once each. There were no network connectivity problems,

> and

> all

> --->users have the exact same security permissions on the server. This

> seems

> --->to be a new problem, as prior to this week I have never seen it / had

> it

> --->reported.

> --->

> --->Any ideas what might be causing this, or how I could even troubleshoot

> it

> --->further?

> --->

> --->Thanks

> --->/-Tim

> --->

>

January 14, 2008

Re: Disappearing Mapped Drives

Dear Tim,

Thank you for the feedback.

It is my pleasure to work with you on this issue.

If you need further assistance, please feel free to let me know.

Sincerely

Morgan Che

Microsoft Online Support

Microsoft Global Technical Support Center

Get Secure! - http://www.microsoft.com/security

=====================================================

When responding to posts, please "Reply to Group" via your newsreader so

that others may learn and benefit from your issue.

=====================================================

This posting is provided "AS IS" with no warranties, and confers no rights.

--------------------

--->From: "Tim Lang" <Tim.Lang@nospam.nospam>

--->References: <173786B4-38E4-4154-B519-17169F10A145@microsoft.com>

<50drq$DVIHA.5204@TK2MSFTNGHUB02.phx.gbl>

--->In-Reply-To: <50drq$DVIHA.5204@TK2MSFTNGHUB02.phx.gbl>

--->Subject: Re: Disappearing Mapped Drives

--->Date: Fri, 11 Jan 2008 10:18:33 -0800

--->Lines: 151

--->Message-ID: <C2F5763B-7711-4C8C-A88F-010A6B997B06@microsoft.com>

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--->X-Newsreader: Microsoft Windows Mail 6.0.6001.17052

--->X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6001.17052

--->X-MS-CommunityGroup-PostID: {C2F5763B-7711-4C8C-A88F-010A6B997B06}

--->X-MS-CommunityGroup-ThreadID: 173786B4-38E4-4154-B519-17169F10A145

--->X-MS-CommunityGroup-ParentID: B10F9228-A76B-4D7E-918E-33D40769480C

--->Newsgroups: microsoft.public.windowsxp.general

--->Path: TK2MSFTNGHUB02.phx.gbl

--->Xref: TK2MSFTNGHUB02.phx.gbl microsoft.public.windowsxp.general:161034

--->NNTP-Posting-Host: TK2MSFTNGHUB02.phx.gbl 127.0.0.1

--->X-Tomcat-NG: microsoft.public.windowsxp.general

--->

--->Great tip - I will exclude my dfsroot directory from the antivirus just

to

--->be safe. If I can catch the problem happening live again, I will also

check

--->on the dfssvc process.

--->

--->Thanks!

--->/-Tim

--->

--->"Morgan che(MSFT)" <v-morche@online.microsoft.com> wrote in message

--->news:50drq$DVIHA.5204@TK2MSFTNGHUB02.phx.gbl...

--->> Dear Tim,

--->>

--->> Thanks for posting here.

--->>

--->> After viewing this post, I suspect the DFS server may have some

problems.

--->> Below is my analysis to this issue.

--->>

--->> 1)After re-logging in, the missing network drive returns, so we can

infer

--->> it is not a permission issue.

--->>

--->> 2) The network drive U can be redirected. which proves the

application of

--->> Group Policy is correct.

--->>

--->> The reason why I suspect DFS server cause the issue is we can obtain

--->> network drive U but not drive T. Moreover, network drive T is resided

on

--->> DFS server.

--->>

--->> During my research, I notice a previous case that mentions the

--->> Anti-viruses

--->> software running on DFS server may cause similar issue.

--->>

--->> In order to narrow down this issue, could you please check if the

--->> dfssrv.exe process has a relatively high utilization usage of CPU when

--->> network drive U disappears on these three clients? If so, please

exclusive

--->> the DFS directory Anti-viruses software scanning directory and see if

this

--->> issue still persists. Additionally, please test the result using the

--->> command-line " net use T: \\hebb.proshow.com\Shares /PERSISTENT:YES"

when

--->> network drive U disappearing.

--->>

--->> I look forward to the reply.

--->>

--->> I hope this helps. Have a nice day!

--->>

--->> Sincerely

--->> Morgan Che

--->> Microsoft Online Support

--->> Microsoft Global Technical Support Center

--->>

--->> Get Secure! - http://www.microsoft.com/security

--->> =====================================================

--->> When responding to posts, please "Reply to Group" via your newsreader

so

--->> that others may learn and benefit from your issue.

--->> =====================================================

--->> This posting is provided "AS IS" with no warranties, and confers no

--->> rights.

--->>

--->> --------------------

--->> --->From: "Tim Lang" <Tim.Lang@nospam.nospam>

--->> --->Subject: Disappearing Mapped Drives

--->> --->Date: Thu, 10 Jan 2008 13:36:33 -0800

--->> --->Lines: 45

--->> --->Message-ID: <173786B4-38E4-4154-B519-17169F10A145@microsoft.com>

--->> --->MIME-Version: 1.0

--->> --->Content-Type: text/plain;

--->> ---> format=flowed;

--->> ---> charset="iso-8859-1";

--->> ---> reply-type=original

--->> --->Content-Transfer-Encoding: 7bit

--->> --->X-Priority: 3

--->> --->X-MSMail-Priority: Normal

--->> --->X-Newsreader: Microsoft Windows Mail 6.0.6001.17052

--->> --->X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6001.17052

--->> --->X-MS-CommunityGroup-MessageCategory:

--->> {E4FCE0A9-75B4-4168-BFF9-16C22D8747EC}

--->> --->X-MS-CommunityGroup-PostID: {173786B4-38E4-4154-B519-17169F10A145}

--->> --->Newsgroups: microsoft.public.windowsxp.general

--->> --->Path: TK2MSFTNGHUB02.phx.gbl

--->> --->Xref: TK2MSFTNGHUB02.phx.gbl

microsoft.public.windowsxp.general:160750

--->> --->NNTP-Posting-Host: TK2MSFTNGHUB02.phx.gbl 127.0.0.1

--->> --->X-Tomcat-NG: microsoft.public.windowsxp.general

--->> --->

--->> --->I am having a problem with some users where a mapped network

drive

--->> will

--->> --->mysteriously disappear.

--->> --->

--->> --->All clients are running Windows XP SP2 (fully patched)

--->> --->Shares are hosted on Windows Server 2003 R2, which is also a DC

and a

--->> DFS

--->> --->root (also fully patched)

--->> --->

--->> --->We have a simple AD network, with a login batch file script to

connect

--->> --->network drives:

--->> --->

--->> --->net use T: /delete /y

--->> --->net use U: /delete /y

--->> --->net use T: \\hebb.proshow.com\Shares /PERSISTENT:YES

--->> --->net use U: \\WPSR-DC1\Home /PERSISTENT:YES

--->> --->

--->> --->I have about 30 client computers, so far this problem has only

--->> happened

--->> on 3

--->> --->of them (one time each, on three different days and at different

--->> times), and

--->> --->in all cases it was only the T: drive that disappeared. Two of

them

--->> were

--->> --->desktops, one was a laptop. The disappearing just happened

randomly,

--->> some

--->> --->time after the login (they were connected and working fine, then

--->> poof -

--->> --->gone). The network share itself (via UNC) was working fine. The

use

--->> doing

--->> --->a logoff/logon reconnected them.

--->> --->

--->> --->We have very little in the way of group policy settings -

everthing is

--->> --->pretty much as per the default domain policy except for this

script,

--->> --->password settings, WSUS settings and turning on offline file cache

--->> --->encryption. Speaking of offline files, one of the users effected

did

--->> have

--->> --->some directories in the share pinned for make available offline,

but

--->> the

--->> --->other two users did not. You will note that the share is

disappearing

--->> is a

--->> --->DFS share, I am not sure if this is related to the problem. I use

--->> --->/persistent:yes because many users are on laptops (using offline

--->> files), so

--->> --->I don't want the drives to disconnect if the user does a reboot

while

--->> not on

--->> --->the network. As mentioned above, only 3 of 30 users have had this

--->> happen,

--->> --->and only once each. There were no network connectivity

problems,

--->> and

--->> all

--->> --->users have the exact same security permissions on the server.

This

--->> seems

--->> --->to be a new problem, as prior to this week I have never seen it /

had

--->> it

--->> --->reported.

--->> --->

--->> --->Any ideas what might be causing this, or how I could even

troubleshoot

--->> it

--->> --->further?

--->> --->

--->> --->Thanks

--->> --->/-Tim

--->> --->

--->>

--->

January 21, 2008

Re: Disappearing Mapped Drives

Dear Tim,

How are you?

May I know if my suggestion is helpful? if anything is unclear, please feel

free to post here.

Thanks.

Sincerely

Morgan Che

Microsoft Online Support

Microsoft Global Technical Support Center

Get Secure! - http://www.microsoft.com/security

=====================================================

When responding to posts, please "Reply to Group" via your newsreader so

that others may learn and benefit from your issue.

=====================================================

This posting is provided "AS IS" with no warranties, and confers no rights.

--------------------

--->From: "Tim Lang" <Tim.Lang@nospam.nospam>

--->References: <173786B4-38E4-4154-B519-17169F10A145@microsoft.com>

<50drq$DVIHA.5204@TK2MSFTNGHUB02.phx.gbl>

--->In-Reply-To: <50drq$DVIHA.5204@TK2MSFTNGHUB02.phx.gbl>

--->Subject: Re: Disappearing Mapped Drives

--->Date: Fri, 11 Jan 2008 10:18:33 -0800

--->Lines: 151

--->Message-ID: <C2F5763B-7711-4C8C-A88F-010A6B997B06@microsoft.com>

--->MIME-Version: 1.0

--->Content-Type: text/plain;

---> format=flowed;

---> charset="iso-8859-1";

---> reply-type=original

--->Content-Transfer-Encoding: 7bit

--->X-Priority: 3

--->X-MSMail-Priority: Normal

--->X-Newsreader: Microsoft Windows Mail 6.0.6001.17052

--->X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6001.17052

--->X-MS-CommunityGroup-PostID: {C2F5763B-7711-4C8C-A88F-010A6B997B06}

--->X-MS-CommunityGroup-ThreadID: 173786B4-38E4-4154-B519-17169F10A145

--->X-MS-CommunityGroup-ParentID: B10F9228-A76B-4D7E-918E-33D40769480C

--->Newsgroups: microsoft.public.windowsxp.general

--->Path: TK2MSFTNGHUB02.phx.gbl

--->Xref: TK2MSFTNGHUB02.phx.gbl microsoft.public.windowsxp.general:161034

--->NNTP-Posting-Host: TK2MSFTNGHUB02.phx.gbl 127.0.0.1

--->X-Tomcat-NG: microsoft.public.windowsxp.general

--->

--->Great tip - I will exclude my dfsroot directory from the antivirus just

to

--->be safe. If I can catch the problem happening live again, I will also

check

--->on the dfssvc process.

--->

--->Thanks!

--->/-Tim

--->

--->"Morgan che(MSFT)" <v-morche@online.microsoft.com> wrote in message

--->news:50drq$DVIHA.5204@TK2MSFTNGHUB02.phx.gbl...

--->> Dear Tim,

--->>

--->> Thanks for posting here.

--->>

--->> After viewing this post, I suspect the DFS server may have some

problems.

--->> Below is my analysis to this issue.

--->>

--->> 1)After re-logging in, the missing network drive returns, so we can

infer

--->> it is not a permission issue.

--->>

--->> 2) The network drive U can be redirected. which proves the

application of

--->> Group Policy is correct.

--->>

--->> The reason why I suspect DFS server cause the issue is we can obtain

--->> network drive U but not drive T. Moreover, network drive T is resided

on

--->> DFS server.

--->>

--->> During my research, I notice a previous case that mentions the

--->> Anti-viruses

--->> software running on DFS server may cause similar issue.

--->>

--->> In order to narrow down this issue, could you please check if the

--->> dfssrv.exe process has a relatively high utilization usage of CPU when

--->> network drive U disappears on these three clients? If so, please

exclusive

--->> the DFS directory Anti-viruses software scanning directory and see if

this

--->> issue still persists. Additionally, please test the result using the

--->> command-line " net use T: \\hebb.proshow.com\Shares /PERSISTENT:YES"

when

--->> network drive U disappearing.

--->>

--->> I look forward to the reply.

--->>

--->> I hope this helps. Have a nice day!

--->>

--->> Sincerely

--->> Morgan Che

--->> Microsoft Online Support

--->> Microsoft Global Technical Support Center

--->>

--->> Get Secure! - http://www.microsoft.com/security

--->> =====================================================

--->> When responding to posts, please "Reply to Group" via your newsreader

so

--->> that others may learn and benefit from your issue.

--->> =====================================================

--->> This posting is provided "AS IS" with no warranties, and confers no

--->> rights.

--->>

--->> --------------------

--->> --->From: "Tim Lang" <Tim.Lang@nospam.nospam>

--->> --->Subject: Disappearing Mapped Drives

--->> --->Date: Thu, 10 Jan 2008 13:36:33 -0800

--->> --->Lines: 45

--->> --->Message-ID: <173786B4-38E4-4154-B519-17169F10A145@microsoft.com>

--->> --->MIME-Version: 1.0

--->> --->Content-Type: text/plain;

--->> ---> format=flowed;

--->> ---> charset="iso-8859-1";

--->> ---> reply-type=original

--->> --->Content-Transfer-Encoding: 7bit

--->> --->X-Priority: 3

--->> --->X-MSMail-Priority: Normal

--->> --->X-Newsreader: Microsoft Windows Mail 6.0.6001.17052

--->> --->X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6001.17052

--->> --->X-MS-CommunityGroup-MessageCategory:

--->> {E4FCE0A9-75B4-4168-BFF9-16C22D8747EC}

--->> --->X-MS-CommunityGroup-PostID: {173786B4-38E4-4154-B519-17169F10A145}

--->> --->Newsgroups: microsoft.public.windowsxp.general

--->> --->Path: TK2MSFTNGHUB02.phx.gbl

--->> --->Xref: TK2MSFTNGHUB02.phx.gbl

microsoft.public.windowsxp.general:160750

--->> --->NNTP-Posting-Host: TK2MSFTNGHUB02.phx.gbl 127.0.0.1

--->> --->X-Tomcat-NG: microsoft.public.windowsxp.general

--->> --->

--->> --->I am having a problem with some users where a mapped network

drive

--->> will

--->> --->mysteriously disappear.

--->> --->

--->> --->All clients are running Windows XP SP2 (fully patched)

--->> --->Shares are hosted on Windows Server 2003 R2, which is also a DC

and a

--->> DFS

--->> --->root (also fully patched)

--->> --->

--->> --->We have a simple AD network, with a login batch file script to

connect

--->> --->network drives:

--->> --->

--->> --->net use T: /delete /y

--->> --->net use U: /delete /y

--->> --->net use T: \\hebb.proshow.com\Shares /PERSISTENT:YES

--->> --->net use U: \\WPSR-DC1\Home /PERSISTENT:YES

--->> --->

--->> --->I have about 30 client computers, so far this problem has only

--->> happened

--->> on 3

--->> --->of them (one time each, on three different days and at different

--->> times), and

--->> --->in all cases it was only the T: drive that disappeared. Two of

them

--->> were

--->> --->desktops, one was a laptop. The disappearing just happened

randomly,

--->> some

--->> --->time after the login (they were connected and working fine, then

--->> poof -

--->> --->gone). The network share itself (via UNC) was working fine. The

use

--->> doing

--->> --->a logoff/logon reconnected them.

--->> --->

--->> --->We have very little in the way of group policy settings -

everthing is

--->> --->pretty much as per the default domain policy except for this

script,

--->> --->password settings, WSUS settings and turning on offline file cache

--->> --->encryption. Speaking of offline files, one of the users effected

did

--->> have

--->> --->some directories in the share pinned for make available offline,

but

--->> the

--->> --->other two users did not. You will note that the share is

disappearing

--->> is a

--->> --->DFS share, I am not sure if this is related to the problem. I use

--->> --->/persistent:yes because many users are on laptops (using offline

--->> files), so

--->> --->I don't want the drives to disconnect if the user does a reboot

while

--->> not on

--->> --->the network. As mentioned above, only 3 of 30 users have had this

--->> happen,

--->> --->and only once each. There were no network connectivity

problems,

--->> and

--->> all

--->> --->users have the exact same security permissions on the server.

This

--->> seems

--->> --->to be a new problem, as prior to this week I have never seen it /

had

--->> it

--->> --->reported.

--->> --->

--->> --->Any ideas what might be causing this, or how I could even

troubleshoot

--->> it

--->> --->further?

--->> --->

--->> --->Thanks

--->> --->/-Tim

--->> --->

--->>

--->

February 3, 2008

Re: Disappearing Mapped Drives

Dear all,

I am experiencing the same problem here. I have users (random) who's network

shares are not visible in windows explorer at logon time (only the home share

is visible); but if I start for example Microsoft Word and try to open a

document I can see ALL my network shares. After loging off and again loging

on the network shares are visible again in windows explorer.

I use batch files to connect the network shares (with no persistent option).

The problem seems to expand/increase after activating a GPO with Active

Desktop and background image-

Anyone who can help?

Regards

Gabriel Fazakas

"Morgan che(MSFT)" wrote:

> Dear Tim,

>

> How are you?

>

> May I know if my suggestion is helpful? if anything is unclear, please feel

> free to post here.

>

> Thanks.

>

> Sincerely

> Morgan Che

> Microsoft Online Support

> Microsoft Global Technical Support Center

>

> Get Secure! - http://www.microsoft.com/security

> =====================================================

> When responding to posts, please "Reply to Group" via your newsreader so

> that others may learn and benefit from your issue.

> =====================================================

> This posting is provided "AS IS" with no warranties, and confers no rights.

>

> --------------------

> --->From: "Tim Lang" <Tim.Lang@nospam.nospam>

> --->References: <173786B4-38E4-4154-B519-17169F10A145@microsoft.com>

> <50drq$DVIHA.5204@TK2MSFTNGHUB02.phx.gbl>

> --->In-Reply-To: <50drq$DVIHA.5204@TK2MSFTNGHUB02.phx.gbl>

> --->Subject: Re: Disappearing Mapped Drives

> --->Date: Fri, 11 Jan 2008 10:18:33 -0800

> --->Lines: 151

> --->Message-ID: <C2F5763B-7711-4C8C-A88F-010A6B997B06@microsoft.com>

> --->MIME-Version: 1.0

> --->Content-Type: text/plain;

> ---> format=flowed;

> ---> charset="iso-8859-1";

> ---> reply-type=original

> --->Content-Transfer-Encoding: 7bit

> --->X-Priority: 3

> --->X-MSMail-Priority: Normal

> --->X-Newsreader: Microsoft Windows Mail 6.0.6001.17052

> --->X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6001.17052

> --->X-MS-CommunityGroup-PostID: {C2F5763B-7711-4C8C-A88F-010A6B997B06}

> --->X-MS-CommunityGroup-ThreadID: 173786B4-38E4-4154-B519-17169F10A145

> --->X-MS-CommunityGroup-ParentID: B10F9228-A76B-4D7E-918E-33D40769480C

> --->Newsgroups: microsoft.public.windowsxp.general

> --->Path: TK2MSFTNGHUB02.phx.gbl

> --->Xref: TK2MSFTNGHUB02.phx.gbl microsoft.public.windowsxp.general:161034

> --->NNTP-Posting-Host: TK2MSFTNGHUB02.phx.gbl 127.0.0.1

> --->X-Tomcat-NG: microsoft.public.windowsxp.general

> --->

> --->Great tip - I will exclude my dfsroot directory from the antivirus just

> to

> --->be safe. If I can catch the problem happening live again, I will also

> check

> --->on the dfssvc process.

> --->

> --->Thanks!

> --->/-Tim

> --->

> --->"Morgan che(MSFT)" <v-morche@online.microsoft.com> wrote in message

> --->news:50drq$DVIHA.5204@TK2MSFTNGHUB02.phx.gbl...

> --->> Dear Tim,

> --->>

> --->> Thanks for posting here.

> --->>

> --->> After viewing this post, I suspect the DFS server may have some

> problems.

> --->> Below is my analysis to this issue.

> --->>

> --->> 1)After re-logging in, the missing network drive returns, so we can

> infer

> --->> it is not a permission issue.

> --->>

> --->> 2) The network drive U can be redirected. which proves the

> application of

> --->> Group Policy is correct.

> --->>

> --->> The reason why I suspect DFS server cause the issue is we can obtain

> --->> network drive U but not drive T. Moreover, network drive T is resided

> on

> --->> DFS server.

> --->>

> --->> During my research, I notice a previous case that mentions the

> --->> Anti-viruses

> --->> software running on DFS server may cause similar issue.

> --->>

> --->> In order to narrow down this issue, could you please check if the

> --->> dfssrv.exe process has a relatively high utilization usage of CPU when

> --->> network drive U disappears on these three clients? If so, please

> exclusive

> --->> the DFS directory Anti-viruses software scanning directory and see if

> this

> --->> issue still persists. Additionally, please test the result using the

> --->> command-line " net use T: \\hebb.proshow.com\Shares /PERSISTENT:YES"

> when

> --->> network drive U disappearing.

> --->>

> --->> I look forward to the reply.

> --->>

> --->> I hope this helps. Have a nice day!

> --->>

> --->> Sincerely

> --->> Morgan Che

> --->> Microsoft Online Support

> --->> Microsoft Global Technical Support Center

> --->>

> --->> Get Secure! - http://www.microsoft.com/security

> --->> =====================================================

> --->> When responding to posts, please "Reply to Group" via your newsreader

> so

> --->> that others may learn and benefit from your issue.

> --->> =====================================================

> --->> This posting is provided "AS IS" with no warranties, and confers no

> --->> rights.

> --->>

> --->> --------------------

> --->> --->From: "Tim Lang" <Tim.Lang@nospam.nospam>

> --->> --->Subject: Disappearing Mapped Drives

> --->> --->Date: Thu, 10 Jan 2008 13:36:33 -0800

> --->> --->Lines: 45

> --->> --->Message-ID: <173786B4-38E4-4154-B519-17169F10A145@microsoft.com>

> --->> --->MIME-Version: 1.0

> --->> --->Content-Type: text/plain;

> --->> ---> format=flowed;

> --->> ---> charset="iso-8859-1";

> --->> ---> reply-type=original

> --->> --->Content-Transfer-Encoding: 7bit

> --->> --->X-Priority: 3

> --->> --->X-MSMail-Priority: Normal

> --->> --->X-Newsreader: Microsoft Windows Mail 6.0.6001.17052

> --->> --->X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6001.17052

> --->> --->X-MS-CommunityGroup-MessageCategory:

> --->> {E4FCE0A9-75B4-4168-BFF9-16C22D8747EC}

> --->> --->X-MS-CommunityGroup-PostID: {173786B4-38E4-4154-B519-17169F10A145}

> --->> --->Newsgroups: microsoft.public.windowsxp.general

> --->> --->Path: TK2MSFTNGHUB02.phx.gbl

> --->> --->Xref: TK2MSFTNGHUB02.phx.gbl

> microsoft.public.windowsxp.general:160750

> --->> --->NNTP-Posting-Host: TK2MSFTNGHUB02.phx.gbl 127.0.0.1

> --->> --->X-Tomcat-NG: microsoft.public.windowsxp.general

> --->> --->

> --->> --->I am having a problem with some users where a mapped network

> drive

> --->> will

> --->> --->mysteriously disappear.

> --->> --->

> --->> --->All clients are running Windows XP SP2 (fully patched)

> --->> --->Shares are hosted on Windows Server 2003 R2, which is also a DC

> and a

> --->> DFS

> --->> --->root (also fully patched)

> --->> --->

> --->> --->We have a simple AD network, with a login batch file script to

> connect

> --->> --->network drives:

> --->> --->

> --->> --->net use T: /delete /y

> --->> --->net use U: /delete /y

> --->> --->net use T: \\hebb.proshow.com\Shares /PERSISTENT:YES

> --->> --->net use U: \\WPSR-DC1\Home /PERSISTENT:YES

> --->> --->

> --->> --->I have about 30 client computers, so far this problem has only

> --->> happened

> --->> on 3

> --->> --->of them (one time each, on three different days and at different

> --->> times), and

> --->> --->in all cases it was only the T: drive that disappeared. Two of

> them

> --->> were

> --->> --->desktops, one was a laptop. The disappearing just happened

> randomly,

> --->> some

> --->> --->time after the login (they were connected and working fine, then

> --->> poof -

> --->> --->gone). The network share itself (via UNC) was working fine. The

> use

> --->> doing

> --->> --->a logoff/logon reconnected them.

> --->> --->

> --->> --->We have very little in the way of group policy settings -

> everthing is

> --->> --->pretty much as per the default domain policy except for this

> script,

> --->> --->password settings, WSUS settings and turning on offline file cache

> --->> --->encryption. Speaking of offline files, one of the users effected

> did

> --->> have

> --->> --->some directories in the share pinned for make available offline,

> but

> --->> the

> --->> --->other two users did not. You will note that the share is

> disappearing

> --->> is a

> --->> --->DFS share, I am not sure if this is related to the problem. I use

> --->> --->/persistent:yes because many users are on laptops (using offline

> --->> files), so

> --->> --->I don't want the drives to disconnect if the user does a reboot

> while

> --->> not on

> --->> --->the network. As mentioned above, only 3 of 30 users have had this

> --->> happen,

> --->> --->and only once each. There were no network connectivity

> problems,

> --->> and

> --->> all

> --->> --->users have the exact same security permissions on the server.

> This

> --->> seems

> --->> --->to be a new problem, as prior to this week I have never seen it /

> had

> --->> it

> --->> --->reported.

> --->> --->

> --->> --->Any ideas what might be causing this, or how I could even

> troubleshoot

> --->> it

> --->> --->further?

> --->> --->

> --->> --->Thanks

> --->> --->/-Tim

> --->> --->

> --->>

> --->

>

February 4, 2008

Re: Disappearing Mapped Drives

Hello Gabriel,

Thank you for your post.

Morgan is out of office currently, I will continue to work with you on this

issue.

I'm wondering whether Morgan's suggestion in this thread is helpful to

resolve this issue.

If not, I'd like to recommend you open a new thread in this Newsgroup.

Thanks.

Sincerely,

Neo Zhu,

Microsoft Online Support

Microsoft Global Technical Support Center

Get Secure! - http://www.microsoft.com/security

=====================================================

When responding to posts, please "Reply to Group" via your newsreader so

that others may learn and benefit from your issue.

=====================================================

This posting is provided "AS IS" with no warranties, and confers no rights.

February 20, 2008

Re: Disappearing Mapped Drives

Good day Morgan,

I am experiencing the same problem as Tim was experiencing. We are running

Trend AV.

Any ideas?

"Morgan che(MSFT)" wrote:

> Dear Tim,

>

> How are you?

>

> May I know if my suggestion is helpful? if anything is unclear, please feel

> free to post here.

>

> Thanks.

>

> Sincerely

> Morgan Che

> Microsoft Online Support

> Microsoft Global Technical Support Center

>

> Get Secure! - http://www.microsoft.com/security

> =====================================================

> When responding to posts, please "Reply to Group" via your newsreader so

> that others may learn and benefit from your issue.

> =====================================================

> This posting is provided "AS IS" with no warranties, and confers no rights.

>

> --------------------

> --->From: "Tim Lang" <Tim.Lang@nospam.nospam>

> --->References: <173786B4-38E4-4154-B519-17169F10A145@microsoft.com>

> <50drq$DVIHA.5204@TK2MSFTNGHUB02.phx.gbl>

> --->In-Reply-To: <50drq$DVIHA.5204@TK2MSFTNGHUB02.phx.gbl>

> --->Subject: Re: Disappearing Mapped Drives

> --->Date: Fri, 11 Jan 2008 10:18:33 -0800

> --->Lines: 151

> --->Message-ID: <C2F5763B-7711-4C8C-A88F-010A6B997B06@microsoft.com>

> --->MIME-Version: 1.0

> --->Content-Type: text/plain;

> ---> format=flowed;

> ---> charset="iso-8859-1";

> ---> reply-type=original

> --->Content-Transfer-Encoding: 7bit

> --->X-Priority: 3

> --->X-MSMail-Priority: Normal

> --->X-Newsreader: Microsoft Windows Mail 6.0.6001.17052

> --->X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6001.17052

> --->X-MS-CommunityGroup-PostID: {C2F5763B-7711-4C8C-A88F-010A6B997B06}

> --->X-MS-CommunityGroup-ThreadID: 173786B4-38E4-4154-B519-17169F10A145

> --->X-MS-CommunityGroup-ParentID: B10F9228-A76B-4D7E-918E-33D40769480C

> --->Newsgroups: microsoft.public.windowsxp.general

> --->Path: TK2MSFTNGHUB02.phx.gbl

> --->Xref: TK2MSFTNGHUB02.phx.gbl microsoft.public.windowsxp.general:161034

> --->NNTP-Posting-Host: TK2MSFTNGHUB02.phx.gbl 127.0.0.1

> --->X-Tomcat-NG: microsoft.public.windowsxp.general

> --->

> --->Great tip - I will exclude my dfsroot directory from the antivirus just

> to

> --->be safe. If I can catch the problem happening live again, I will also

> check

> --->on the dfssvc process.

> --->

> --->Thanks!

> --->/-Tim

> --->

> --->"Morgan che(MSFT)" <v-morche@online.microsoft.com> wrote in message

> --->news:50drq$DVIHA.5204@TK2MSFTNGHUB02.phx.gbl...

> --->> Dear Tim,

> --->>

> --->> Thanks for posting here.

> --->>

> --->> After viewing this post, I suspect the DFS server may have some

> problems.

> --->> Below is my analysis to this issue.

> --->>

> --->> 1)After re-logging in, the missing network drive returns, so we can

> infer

> --->> it is not a permission issue.

> --->>

> --->> 2) The network drive U can be redirected. which proves the

> application of

> --->> Group Policy is correct.

> --->>

> --->> The reason why I suspect DFS server cause the issue is we can obtain

> --->> network drive U but not drive T. Moreover, network drive T is resided

> on

> --->> DFS server.

> --->>

> --->> During my research, I notice a previous case that mentions the

> --->> Anti-viruses

> --->> software running on DFS server may cause similar issue.

> --->>

> --->> In order to narrow down this issue, could you please check if the

> --->> dfssrv.exe process has a relatively high utilization usage of CPU when

> --->> network drive U disappears on these three clients? If so, please

> exclusive

> --->> the DFS directory Anti-viruses software scanning directory and see if

> this

> --->> issue still persists. Additionally, please test the result using the

> --->> command-line " net use T: \\hebb.proshow.com\Shares /PERSISTENT:YES"

> when

> --->> network drive U disappearing.

> --->>

> --->> I look forward to the reply.

> --->>

> --->> I hope this helps. Have a nice day!

> --->>

> --->> Sincerely

> --->> Morgan Che

> --->> Microsoft Online Support

> --->> Microsoft Global Technical Support Center

> --->>

> --->> Get Secure! - http://www.microsoft.com/security

> --->> =====================================================

> --->> When responding to posts, please "Reply to Group" via your newsreader

> so

> --->> that others may learn and benefit from your issue.

> --->> =====================================================

> --->> This posting is provided "AS IS" with no warranties, and confers no

> --->> rights.

> --->>

> --->> --------------------

> --->> --->From: "Tim Lang" <Tim.Lang@nospam.nospam>

> --->> --->Subject: Disappearing Mapped Drives

> --->> --->Date: Thu, 10 Jan 2008 13:36:33 -0800

> --->> --->Lines: 45

> --->> --->Message-ID: <173786B4-38E4-4154-B519-17169F10A145@microsoft.com>

> --->> --->MIME-Version: 1.0

> --->> --->Content-Type: text/plain;

> --->> ---> format=flowed;

> --->> ---> charset="iso-8859-1";

> --->> ---> reply-type=original

> --->> --->Content-Transfer-Encoding: 7bit

> --->> --->X-Priority: 3

> --->> --->X-MSMail-Priority: Normal

> --->> --->X-Newsreader: Microsoft Windows Mail 6.0.6001.17052

> --->> --->X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6001.17052

> --->> --->X-MS-CommunityGroup-MessageCategory:

> --->> {E4FCE0A9-75B4-4168-BFF9-16C22D8747EC}

> --->> --->X-MS-CommunityGroup-PostID: {173786B4-38E4-4154-B519-17169F10A145}

> --->> --->Newsgroups: microsoft.public.windowsxp.general

> --->> --->Path: TK2MSFTNGHUB02.phx.gbl

> --->> --->Xref: TK2MSFTNGHUB02.phx.gbl

> microsoft.public.windowsxp.general:160750

> --->> --->NNTP-Posting-Host: TK2MSFTNGHUB02.phx.gbl 127.0.0.1

> --->> --->X-Tomcat-NG: microsoft.public.windowsxp.general

> --->> --->

> --->> --->I am having a problem with some users where a mapped network

> drive

> --->> will

> --->> --->mysteriously disappear.

> --->> --->

> --->> --->All clients are running Windows XP SP2 (fully patched)

> --->> --->Shares are hosted on Windows Server 2003 R2, which is also a DC

> and a

> --->> DFS

> --->> --->root (also fully patched)

> --->> --->

> --->> --->We have a simple AD network, with a login batch file script to

> connect

> --->> --->network drives:

> --->> --->

> --->> --->net use T: /delete /y

> --->> --->net use U: /delete /y

> --->> --->net use T: \\hebb.proshow.com\Shares /PERSISTENT:YES

> --->> --->net use U: \\WPSR-DC1\Home /PERSISTENT:YES

> --->> --->

> --->> --->I have about 30 client computers, so far this problem has only

> --->> happened

> --->> on 3

> --->> --->of them (one time each, on three different days and at different

> --->> times), and

> --->> --->in all cases it was only the T: drive that disappeared. Two of

> them

> --->> were

> --->> --->desktops, one was a laptop. The disappearing just happened

> randomly,

> --->> some

> --->> --->time after the login (they were connected and working fine, then

> --->> poof -

> --->> --->gone). The network share itself (via UNC) was working fine. The

> use

> --->> doing

> --->> --->a logoff/logon reconnected them.

> --->> --->

> --->> --->We have very little in the way of group policy settings -

> everthing is

> --->> --->pretty much as per the default domain policy except for this

> script,

> --->> --->password settings, WSUS settings and turning on offline file cache

> --->> --->encryption. Speaking of offline files, one of the users effected

> did

> --->> have

> --->> --->some directories in the share pinned for make available offline,

> but

> --->> the

> --->> --->other two users did not. You will note that the share is

> disappearing

> --->> is a

> --->> --->DFS share, I am not sure if this is related to the problem. I use

> --->> --->/persistent:yes because many users are on laptops (using offline

> --->> files), so

> --->> --->I don't want the drives to disconnect if the user does a reboot

> while

> --->> not on

> --->> --->the network. As mentioned above, only 3 of 30 users have had this

> --->> happen,

> --->> --->and only once each. There were no network connectivity

> problems,

> --->> and

> --->> all

> --->> --->users have the exact same security permissions on the server.

> This

> --->> seems

> --->> --->to be a new problem, as prior to this week I have never seen it /

> had

> --->> it

> --->> --->reported.

> --->> --->

> --->> --->Any ideas what might be causing this, or how I could even

> troubleshoot

> --->> it

> --->> --->further?

> --->> --->

> --->> --->Thanks

> --->> --->/-Tim

> --->> --->

> --->>

> --->

>

February 21, 2008

Re: Disappearing Mapped Drives

Dear Customer,

Thanks for using this newsgroup.

Please try the above steps. If this issue still remains, I would like to

suggest you open a new thread to ensure your inquiry receive full attention

and provide clarify to others in this newsgroup. We are happy to work with

you regarding it.

Thanks for your understanding and cooperation.

Sincerely

Morgan Che

Microsoft Online Support

Microsoft Global Technical Support Center

Get Secure! - http://www.microsoft.com/security

=====================================================

When responding to posts, please "Reply to Group" via your newsreader so

that others may learn and benefit from your issue.

=====================================================

This posting is provided "AS IS" with no warranties, and confers no rights.

--------------------

--->Thread-Topic: Disappearing Mapped Drives

--->thread-index: Achz32FKMxK/bSYTTJ+Jdn7p4pHaUg==

--->X-WBNR-Posting-Host: 207.46.192.207

--->From: =?Utf-8?B?SmF5IG1hbg==?= <Jayman@discussions.microsoft.com>

--->References: <173786B4-38E4-4154-B519-17169F10A145@microsoft.com>

<50drq$DVIHA.5204@TK2MSFTNGHUB02.phx.gbl>

<C2F5763B-7711-4C8C-A88F-010A6B997B06@microsoft.com>

<Rm3#HOBXIHA.360@TK2MSFTNGHUB02.phx.gbl>

--->Subject: Re: Disappearing Mapped Drives

--->Date: Wed, 20 Feb 2008 08:41:02 -0800

--->Lines: 240

--->Message-ID: <8E2BC414-E6FB-4CAE-BA2B-31598BD74999@microsoft.com>

--->MIME-Version: 1.0

--->Content-Type: text/plain;

---> charset="Utf-8"

--->Content-Transfer-Encoding: 7bit

--->X-Newsreader: Microsoft CDO for Windows 2000

--->Content-Class: urn:content-classes:message

--->Importance: normal

--->Priority: normal

--->X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.2992

--->Newsgroups: microsoft.public.windowsxp.general

--->Path: TK2MSFTNGHUB02.phx.gbl

--->Xref: TK2MSFTNGHUB02.phx.gbl microsoft.public.windowsxp.general:173129

--->NNTP-Posting-Host: tk2msftibfm01.phx.gbl 10.40.244.149

--->X-Tomcat-NG: microsoft.public.windowsxp.general

--->

--->Good day Morgan,

--->

--->I am experiencing the same problem as Tim was experiencing. We are

running

--->Trend AV.

--->

--->Any ideas?

--->

--->"Morgan che(MSFT)" wrote:

--->

--->> Dear Tim,

--->>

--->> How are you?

--->>

--->> May I know if my suggestion is helpful? if anything is unclear,

please feel

--->> free to post here.

--->>

--->> Thanks.

--->>

--->> Sincerely

--->> Morgan Che

--->> Microsoft Online Support

--->> Microsoft Global Technical Support Center

--->>

--->> Get Secure! - http://www.microsoft.com/security

--->> =====================================================

--->> When responding to posts, please "Reply to Group" via your newsreader

so

--->> that others may learn and benefit from your issue.

--->> =====================================================

--->> This posting is provided "AS IS" with no warranties, and confers no

rights.

--->>

--->> --------------------

--->> --->From: "Tim Lang" <Tim.Lang@nospam.nospam>

--->> --->References: <173786B4-38E4-4154-B519-17169F10A145@microsoft.com>

--->> <50drq$DVIHA.5204@TK2MSFTNGHUB02.phx.gbl>

--->> --->In-Reply-To: <50drq$DVIHA.5204@TK2MSFTNGHUB02.phx.gbl>

--->> --->Subject: Re: Disappearing Mapped Drives

--->> --->Date: Fri, 11 Jan 2008 10:18:33 -0800

--->> --->Lines: 151

--->> --->Message-ID: <C2F5763B-7711-4C8C-A88F-010A6B997B06@microsoft.com>

--->> --->MIME-Version: 1.0

--->> --->Content-Type: text/plain;

--->> ---> format=flowed;

--->> ---> charset="iso-8859-1";

--->> ---> reply-type=original

--->> --->Content-Transfer-Encoding: 7bit

--->> --->X-Priority: 3

--->> --->X-MSMail-Priority: Normal

--->> --->X-Newsreader: Microsoft Windows Mail 6.0.6001.17052

--->> --->X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6001.17052

--->> --->X-MS-CommunityGroup-PostID: {C2F5763B-7711-4C8C-A88F-010A6B997B06}

--->> --->X-MS-CommunityGroup-ThreadID: 173786B4-38E4-4154-B519-17169F10A145

--->> --->X-MS-CommunityGroup-ParentID: B10F9228-A76B-4D7E-918E-33D40769480C

--->> --->Newsgroups: microsoft.public.windowsxp.general

--->> --->Path: TK2MSFTNGHUB02.phx.gbl

--->> --->Xref: TK2MSFTNGHUB02.phx.gbl

microsoft.public.windowsxp.general:161034

--->> --->NNTP-Posting-Host: TK2MSFTNGHUB02.phx.gbl 127.0.0.1

--->> --->X-Tomcat-NG: microsoft.public.windowsxp.general

--->> --->

--->> --->Great tip - I will exclude my dfsroot directory from the

antivirus just

--->> to

--->> --->be safe. If I can catch the problem happening live again, I will

also

--->> check

--->> --->on the dfssvc process.

--->> --->

--->> --->Thanks!

--->> --->/-Tim

--->> --->

--->> --->"Morgan che(MSFT)" <v-morche@online.microsoft.com> wrote in

message

--->> --->news:50drq$DVIHA.5204@TK2MSFTNGHUB02.phx.gbl...

--->> --->> Dear Tim,

--->> --->>

--->> --->> Thanks for posting here.

--->> --->>

--->> --->> After viewing this post, I suspect the DFS server may have some

--->> problems.

--->> --->> Below is my analysis to this issue.

--->> --->>

--->> --->> 1)After re-logging in, the missing network drive returns, so we

can

--->> infer

--->> --->> it is not a permission issue.

--->> --->>

--->> --->> 2) The network drive U can be redirected. which proves the

--->> application of

--->> --->> Group Policy is correct.

--->> --->>

--->> --->> The reason why I suspect DFS server cause the issue is we can

obtain

--->> --->> network drive U but not drive T. Moreover, network drive T is

resided

--->> on

--->> --->> DFS server.

--->> --->>

--->> --->> During my research, I notice a previous case that mentions the

--->> --->> Anti-viruses

--->> --->> software running on DFS server may cause similar issue.

--->> --->>

--->> --->> In order to narrow down this issue, could you please check if

the

--->> --->> dfssrv.exe process has a relatively high utilization usage of

CPU when

--->> --->> network drive U disappears on these three clients? If so,

please

--->> exclusive

--->> --->> the DFS directory Anti-viruses software scanning directory and

see if

--->> this

--->> --->> issue still persists. Additionally, please test the result

using the

--->> --->> command-line " net use T: \\hebb.proshow.com\Shares

/PERSISTENT:YES"

--->> when

--->> --->> network drive U disappearing.

--->> --->>

--->> --->> I look forward to the reply.

--->> --->>

--->> --->> I hope this helps. Have a nice day!

--->> --->>

--->> --->> Sincerely

--->> --->> Morgan Che

--->> --->> Microsoft Online Support

--->> --->> Microsoft Global Technical Support Center

--->> --->>

--->> --->> Get Secure! - http://www.microsoft.com/security

--->> --->> =====================================================

--->> --->> When responding to posts, please "Reply to Group" via your

newsreader

--->> so

--->> --->> that others may learn and benefit from your issue.

--->> --->> =====================================================

--->> --->> This posting is provided "AS IS" with no warranties, and

confers no

--->> --->> rights.

--->> --->>

--->> --->> --------------------

--->> --->> --->From: "Tim Lang" <Tim.Lang@nospam.nospam>

--->> --->> --->Subject: Disappearing Mapped Drives

--->> --->> --->Date: Thu, 10 Jan 2008 13:36:33 -0800

--->> --->> --->Lines: 45

--->> --->> --->Message-ID:

<173786B4-38E4-4154-B519-17169F10A145@microsoft.com>

--->> --->> --->MIME-Version: 1.0

--->> --->> --->Content-Type: text/plain;

--->> --->> ---> format=flowed;

--->> --->> ---> charset="iso-8859-1";

--->> --->> ---> reply-type=original

--->> --->> --->Content-Transfer-Encoding: 7bit

--->> --->> --->X-Priority: 3

--->> --->> --->X-MSMail-Priority: Normal

--->> --->> --->X-Newsreader: Microsoft Windows Mail 6.0.6001.17052

--->> --->> --->X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6001.17052

--->> --->> --->X-MS-CommunityGroup-MessageCategory:

--->> --->> {E4FCE0A9-75B4-4168-BFF9-16C22D8747EC}

--->> --->> --->X-MS-CommunityGroup-PostID:

{173786B4-38E4-4154-B519-17169F10A145}

--->> --->> --->Newsgroups: microsoft.public.windowsxp.general

--->> --->> --->Path: TK2MSFTNGHUB02.phx.gbl

--->> --->> --->Xref: TK2MSFTNGHUB02.phx.gbl

--->> microsoft.public.windowsxp.general:160750

--->> --->> --->NNTP-Posting-Host: TK2MSFTNGHUB02.phx.gbl 127.0.0.1

--->> --->> --->X-Tomcat-NG: microsoft.public.windowsxp.general

--->> --->> --->

--->> --->> --->I am having a problem with some users where a mapped

network

--->> drive

--->> --->> will

--->> --->> --->mysteriously disappear.

--->> --->> --->

--->> --->> --->All clients are running Windows XP SP2 (fully patched)

--->> --->> --->Shares are hosted on Windows Server 2003 R2, which is also

a DC

--->> and a

--->> --->> DFS

--->> --->> --->root (also fully patched)

--->> --->> --->

--->> --->> --->We have a simple AD network, with a login batch file script

to

--->> connect

--->> --->> --->network drives:

--->> --->> --->

--->> --->> --->net use T: /delete /y

--->> --->> --->net use U: /delete /y

--->> --->> --->net use T: \\hebb.proshow.com\Shares /PERSISTENT:YES

--->> --->> --->net use U: \\WPSR-DC1\Home /PERSISTENT:YES

--->> --->> --->

--->> --->> --->I have about 30 client computers, so far this problem has

only

--->> --->> happened

--->> --->> on 3

--->> --->> --->of them (one time each, on three different days and at

different

--->> --->> times), and

--->> --->> --->in all cases it was only the T: drive that disappeared.

Two of

--->> them

--->> --->> were

--->> --->> --->desktops, one was a laptop. The disappearing just happened

--->> randomly,

--->> --->> some

--->> --->> --->time after the login (they were connected and working fine,

then

--->> --->> poof -

--->> --->> --->gone). The network share itself (via UNC) was working

fine. The

--->> use

--->> --->> doing

--->> --->> --->a logoff/logon reconnected them.

--->> --->> --->

--->> --->> --->We have very little in the way of group policy settings -

--->> everthing is

--->> --->> --->pretty much as per the default domain policy except for

this

--->> script,

--->> --->> --->password settings, WSUS settings and turning on offline

file cache

--->> --->> --->encryption. Speaking of offline files, one of the users

effected

--->> did

--->> --->> have

--->> --->> --->some directories in the share pinned for make available

offline,

--->> but

--->> --->> the

--->> --->> --->other two users did not. You will note that the share is

--->> disappearing

--->> --->> is a

--->> --->> --->DFS share, I am not sure if this is related to the problem.

I use

--->> --->> --->/persistent:yes because many users are on laptops (using

offline

--->> --->> files), so

--->> --->> --->I don't want the drives to disconnect if the user does a

reboot

--->> while

--->> --->> not on

--->> --->> --->the network. As mentioned above, only 3 of 30 users have

had this

--->> --->> happen,

--->> --->> --->and only once each. There were no network connectivity

--->> problems,

--->> --->> and

--->> --->> all

--->> --->> --->users have the exact same security permissions on the

server.

--->> This

--->> --->> seems

--->> --->> --->to be a new problem, as prior to this week I have never

seen it /

--->> had

--->> --->> it

--->> --->> --->reported.

--->> --->> --->

--->> --->> --->Any ideas what might be causing this, or how I could even

--->> troubleshoot

--->> --->> it

--->> --->> --->further?

--->> --->> --->

--->> --->> --->Thanks

--->> --->> --->/-Tim

--->> --->> --->

--->> --->>

--->> --->

--->>

--->

February 21, 2008

Re: Disappearing Mapped Drives

I'm in this thread late, but there is a known problem with Symantec

Corporate Edition 10.1.5/10.2 and Symantec End Point Protection 11.x

causing disconnected network drive issues. I've seen this one dozens of

networks and it's random as to what workstations it impacts.

If you are using Symantec 10.1.x or 10.2 or SEPP, download their latest

maintenance releases - you have to have a valid support service with

them to get these.

--

Leythos

- Igitur qui desiderat pacem, praeparet bellum.

- Calling an illegal alien an "undocumented worker" is like calling a

drug dealer an "unlicensed pharmacist"

spam999free@rrohio.com (remove 999 for proper email address)

February 21, 2008

Re: Disappearing Mapped Drives

The date and time was 2/21/2008 7:44 AM, and on a whim, Leythos pounded

out on the keyboard:

> I'm in this thread late, but there is a known problem with Symantec

> Corporate Edition 10.1.5/10.2 and Symantec End Point Protection 11.x

> causing disconnected network drive issues. I've seen this one dozens of

> networks and it's random as to what workstations it impacts.

>

> If you are using Symantec 10.1.x or 10.2 or SEPP, download their latest

> maintenance releases - you have to have a valid support service with

> them to get these.

>

Would you happen to have a link describing the issue?

Thanks,

--

Terry R.

***Reply Note***

Anti-spam measures are included in my email address.

Delete NOSPAM from the email address after clicking Reply.

February 21, 2008

Re: Disappearing Mapped Drives

In article <OXWrthKdIHA.4968@TK2MSFTNGP02.phx.gbl>,

F1ComNOSPAM@pobox.com says...

> The date and time was 2/21/2008 7:44 AM, and on a whim, Leythos pounded

> out on the keyboard:

>

> > I'm in this thread late, but there is a known problem with Symantec

> > Corporate Edition 10.1.5/10.2 and Symantec End Point Protection 11.x

> > causing disconnected network drive issues. I've seen this one dozens of

> > networks and it's random as to what workstations it impacts.

> >

> > If you are using Symantec 10.1.x or 10.2 or SEPP, download their latest

> > maintenance releases - you have to have a valid support service with

> > them to get these.

> >

>

> Would you happen to have a link describing the issue?

No, but if you search for DISCONNECTED DRIVES and SYMANTEC on google I'm

going to bet that you find a lot of hits.

--

Leythos

- Igitur qui desiderat pacem, praeparet bellum.

- Calling an illegal alien an "undocumented worker" is like calling a

drug dealer an "unlicensed pharmacist"

spam999free@rrohio.com (remove 999 for proper email address)

February 22, 2008

Re: Disappearing Mapped Drives

The date and time was 2/21/2008 8:49 AM, and on a whim, Leythos pounded

out on the keyboard:

> In article <OXWrthKdIHA.4968@TK2MSFTNGP02.phx.gbl>,

> F1ComNOSPAM@pobox.com says...

>> The date and time was 2/21/2008 7:44 AM, and on a whim, Leythos pounded

>> out on the keyboard:

>>

>>> I'm in this thread late, but there is a known problem with Symantec

>>> Corporate Edition 10.1.5/10.2 and Symantec End Point Protection 11.x

>>> causing disconnected network drive issues. I've seen this one dozens of

>>> networks and it's random as to what workstations it impacts.

>>>

>>> If you are using Symantec 10.1.x or 10.2 or SEPP, download their latest

>>> maintenance releases - you have to have a valid support service with

>>> them to get these.

>>>

>> Would you happen to have a link describing the issue?

>

> No, but if you search for DISCONNECTED DRIVES and SYMANTEC on google I'm

> going to bet that you find a lot of hits.

>

Everything I read stated the drives "appear" disconnected but can still

be accessed, although some fail when an app tries to access. That's

different than what was implied, and sounds like it was fixed in 10.1.6010.

--

Terry R.

***Reply Note***

Anti-spam measures are included in my email address.

Delete NOSPAM from the email address after clicking Reply.

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