Sessions getting disconnected

[Guest RandyH]

Users are complaining that they are getting kicked off our TS, a message

pops up, I think it's the RDP client, but it says, The connection has

been lost - Attempting to Reconnect Session.

 

The session reconnects, and the user is back where at the screen where

they lost connection.

 

What is causing lost connections?

Should we be tweaking something on the TS?

Like this, HKLM\SYSTEM\CurrentControlSet\Control\Terminal

Server\WinStations\RDP-Tcp\KeepAliveTimeout?

 

Tia,

RandyH

[Guest Vera Noest [MVP]]

Re: Sessions getting disconnected

 

Are these users coming in over a WAN connection?

The cause of the loss of connectivity can be anything, and it's

most likely lying ouside the TS.

Changing the KeepAlive mechanism only ensures that your server

faster detects that the connection is lost and puts the session in

a disconnected state, but that seems already to work properly,

since your users can auto-reconnect.

 

You'd better post in a network newsgroup, and/or use NetMon or a

continuous ping (ping -t) to get some idea of how many packets are

lost and then take the issue up with your network provider.

_________________________________________________________

Vera Noest

MCSE, CCEA, Microsoft MVP - Terminal Server

TS troubleshooting: http://ts.veranoest.net

___ please respond in newsgroup, NOT by private email ___

 

RandyH <RHollaw@HOTmail.com> wrote on 25 mar 2008 in

microsoft.public.windows.terminal_services:

> Users are complaining that they are getting kicked off our TS, a

> message

> pops up, I think it's the RDP client, but it says, The

> connection has

> been lost - Attempting to Reconnect Session.

>

> The session reconnects, and the user is back where at the screen

> where they lost connection.

>

> What is causing lost connections?

> Should we be tweaking something on the TS?

> Like this, HKLM\SYSTEM\CurrentControlSet\Control\Terminal

> Server\WinStations\RDP-Tcp\KeepAliveTimeout?

>

> Tia,

> RandyH

[Guest RandyH]

Re: Sessions getting disconnected

 

They are coming over the Internet via Cisco VPN client.

 

Would I still NetMon or Ping -t?

 

Vera Noest [MVP] wrote:

> Are these users coming in over a WAN connection?

> The cause of the loss of connectivity can be anything, and it's

> most likely lying ouside the TS.

> Changing the KeepAlive mechanism only ensures that your server

> faster detects that the connection is lost and puts the session in

> a disconnected state, but that seems already to work properly,

> since your users can auto-reconnect.

>

> You'd better post in a network newsgroup, and/or use NetMon or a

> continuous ping (ping -t) to get some idea of how many packets are

> lost and then take the issue up with your network provider.

> _________________________________________________________

> Vera Noest

> MCSE, CCEA, Microsoft MVP - Terminal Server

> TS troubleshooting: http://ts.veranoest.net

> ___ please respond in newsgroup, NOT by private email ___

>

> RandyH <RHollaw@HOTmail.com> wrote on 25 mar 2008 in

> microsoft.public.windows.terminal_services:

>

>> Users are complaining that they are getting kicked off our TS, a

>> message

>> pops up, I think it's the RDP client, but it says, The

>> connection has

>> been lost - Attempting to Reconnect Session.

>>

>> The session reconnects, and the user is back where at the screen

>> where they lost connection.

>>

>> What is causing lost connections?

>> Should we be tweaking something on the TS?

>> Like this, HKLM\SYSTEM\CurrentControlSet\Control\Terminal

>> Server\WinStations\RDP-Tcp\KeepAliveTimeout?

>>

>> Tia,

>> RandyH

[Guest Vera Noest [MVP]]

Re: Sessions getting disconnected

 

When the rdp connection is down, is the whole VPN connection down

also?

Can users still connect to other resources on your network, like

shared folders, when the rdp session is disconnected?

 

_________________________________________________________

Vera Noest

MCSE, CCEA, Microsoft MVP - Terminal Server

TS troubleshooting: http://ts.veranoest.net

___ please respond in newsgroup, NOT by private email ___

 

RandyH <RHollaw@HOTmail.com> wrote on 25 mar 2008 in

microsoft.public.windows.terminal_services:

> They are coming over the Internet via Cisco VPN client.

>

> Would I still NetMon or Ping -t?

>

> Vera Noest [MVP] wrote:

>> Are these users coming in over a WAN connection?

>> The cause of the loss of connectivity can be anything, and it's

>> most likely lying ouside the TS.

>> Changing the KeepAlive mechanism only ensures that your server

>> faster detects that the connection is lost and puts the session

>> in a disconnected state, but that seems already to work

>> properly, since your users can auto-reconnect.

>>

>> You'd better post in a network newsgroup, and/or use NetMon or

>> a continuous ping (ping -t) to get some idea of how many

>> packets are lost and then take the issue up with your network

>> provider.

>> _________________________________________________________ Vera

>> Noest MCSE, CCEA, Microsoft MVP - Terminal Server

>> TS troubleshooting: http://ts.veranoest.net

>> ___ please respond in newsgroup, NOT by private email ___

>>

>> RandyH <RHollaw@HOTmail.com> wrote on 25 mar 2008 in

>> microsoft.public.windows.terminal_services:

>>

>>> Users are complaining that they are getting kicked off our TS,

>>> a message

>>> pops up, I think it's the RDP client, but it says, The

>>> connection has

>>> been lost - Attempting to Reconnect Session.

>>>

>>> The session reconnects, and the user is back where at the

>>> screen where they lost connection.

>>>

>>> What is causing lost connections?

>>> Should we be tweaking something on the TS?

>>> Like this, HKLM\SYSTEM\CurrentControlSet\Control\Terminal

>>> Server\WinStations\RDP-Tcp\KeepAliveTimeout?

>>>

>>> Tia,

>>> RandyH

[Guest RandyH]

Re: Sessions getting disconnected

 

I'll ask my users, and report back tomorrow....

 

Vera Noest [MVP] wrote:

> When the rdp connection is down, is the whole VPN connection down

> also?

> Can users still connect to other resources on your network, like

> shared folders, when the rdp session is disconnected?

>

> _________________________________________________________

> Vera Noest

> MCSE, CCEA, Microsoft MVP - Terminal Server

> TS troubleshooting: http://ts.veranoest.net

> ___ please respond in newsgroup, NOT by private email ___

>

> RandyH <RHollaw@HOTmail.com> wrote on 25 mar 2008 in

> microsoft.public.windows.terminal_services:

>

>> They are coming over the Internet via Cisco VPN client.

>>

>> Would I still NetMon or Ping -t?

>>

>> Vera Noest [MVP] wrote:

>>> Are these users coming in over a WAN connection?

>>> The cause of the loss of connectivity can be anything, and it's

>>> most likely lying ouside the TS.

>>> Changing the KeepAlive mechanism only ensures that your server

>>> faster detects that the connection is lost and puts the session

>>> in a disconnected state, but that seems already to work

>>> properly, since your users can auto-reconnect.

>>>

>>> You'd better post in a network newsgroup, and/or use NetMon or

>>> a continuous ping (ping -t) to get some idea of how many

>>> packets are lost and then take the issue up with your network

>>> provider.

>>> _________________________________________________________ Vera

>>> Noest MCSE, CCEA, Microsoft MVP - Terminal Server

>>> TS troubleshooting: http://ts.veranoest.net

>>> ___ please respond in newsgroup, NOT by private email ___

>>>

>>> RandyH <RHollaw@HOTmail.com> wrote on 25 mar 2008 in

>>> microsoft.public.windows.terminal_services:

>>>

>>>> Users are complaining that they are getting kicked off our TS,

>>>> a message

>>>> pops up, I think it's the RDP client, but it says, The

>>>> connection has

>>>> been lost - Attempting to Reconnect Session.

>>>>

>>>> The session reconnects, and the user is back where at the

>>>> screen where they lost connection.

>>>>

>>>> What is causing lost connections?

>>>> Should we be tweaking something on the TS?

>>>> Like this, HKLM\SYSTEM\CurrentControlSet\Control\Terminal

>>>> Server\WinStations\RDP-Tcp\KeepAliveTimeout?

>>>>

>>>> Tia,

>>>> RandyH

[Guest RandyH]

Re: Sessions getting disconnected

 

The VPN connection stays connected, just the session drops and then

reconnects.

 

RandyH wrote:

> I'll ask my users, and report back tomorrow....

>

> Vera Noest [MVP] wrote:

>> When the rdp connection is down, is the whole VPN connection down also?

>> Can users still connect to other resources on your network, like

>> shared folders, when the rdp session is disconnected?

>>

>> _________________________________________________________

>> Vera Noest

>> MCSE, CCEA, Microsoft MVP - Terminal Server

>> TS troubleshooting: http://ts.veranoest.net

>> ___ please respond in newsgroup, NOT by private email ___

>>

>> RandyH <RHollaw@HOTmail.com> wrote on 25 mar 2008 in

>> microsoft.public.windows.terminal_services:

>>> They are coming over the Internet via Cisco VPN client.

>>>

>>> Would I still NetMon or Ping -t?

>>>

>>> Vera Noest [MVP] wrote:

>>>> Are these users coming in over a WAN connection?

>>>> The cause of the loss of connectivity can be anything, and it's

>>>> most likely lying ouside the TS.

>>>> Changing the KeepAlive mechanism only ensures that your server

>>>> faster detects that the connection is lost and puts the session

>>>> in a disconnected state, but that seems already to work

>>>> properly, since your users can auto-reconnect.

>>>>

>>>> You'd better post in a network newsgroup, and/or use NetMon or

>>>> a continuous ping (ping -t) to get some idea of how many

>>>> packets are lost and then take the issue up with your network

>>>> provider. _________________________________________________________

>>>> Vera

>>>> Noest MCSE, CCEA, Microsoft MVP - Terminal Server

>>>> TS troubleshooting: http://ts.veranoest.net

>>>> ___ please respond in newsgroup, NOT by private email ___

>>>>

>>>> RandyH <RHollaw@HOTmail.com> wrote on 25 mar 2008 in

>>>> microsoft.public.windows.terminal_services:

>>>>> Users are complaining that they are getting kicked off our TS,

>>>>> a message pops up, I think it's the RDP client, but it says, The

>>>>> connection has been lost - Attempting to Reconnect Session.

>>>>>

>>>>> The session reconnects, and the user is back where at the

>>>>> screen where they lost connection.

>>>>>

>>>>> What is causing lost connections?

>>>>> Should we be tweaking something on the TS?

>>>>> Like this, HKLM\SYSTEM\CurrentControlSet\Control\Terminal

>>>>> Server\WinStations\RDP-Tcp\KeepAliveTimeout?

>>>>>

>>>>> Tia,

>>>>> RandyH

[Guest Vera Noest [MVP]]

Re: Sessions getting disconnected

 

Are they disconnected after some minutes of idle time, or also when

they are actively working (typing, moving the mouse)?

_________________________________________________________

Vera Noest

MCSE, CCEA, Microsoft MVP - Terminal Server

TS troubleshooting: http://ts.veranoest.net

___ please respond in newsgroup, NOT by private email ___

 

RandyH <RHollaw@HOTmail.com> wrote on 27 mar 2008 in

microsoft.public.windows.terminal_services:

> The VPN connection stays connected, just the session drops and

> then reconnects.

>

> RandyH wrote:

>> I'll ask my users, and report back tomorrow....

>>

>> Vera Noest [MVP] wrote:

>>> When the rdp connection is down, is the whole VPN connection

>>> down also? Can users still connect to other resources on your

>>> network, like shared folders, when the rdp session is

>>> disconnected?

>>>

>>> _________________________________________________________

>>> Vera Noest

>>> MCSE, CCEA, Microsoft MVP - Terminal Server

>>> TS troubleshooting: http://ts.veranoest.net

>>> ___ please respond in newsgroup, NOT by private email ___

>>>

>>> RandyH <RHollaw@HOTmail.com> wrote on 25 mar 2008 in

>>> microsoft.public.windows.terminal_services:

>>>> They are coming over the Internet via Cisco VPN client.

>>>>

>>>> Would I still NetMon or Ping -t?

>>>>

>>>> Vera Noest [MVP] wrote:

>>>>> Are these users coming in over a WAN connection?

>>>>> The cause of the loss of connectivity can be anything, and

>>>>> it's most likely lying ouside the TS.

>>>>> Changing the KeepAlive mechanism only ensures that your

>>>>> server faster detects that the connection is lost and puts

>>>>> the session in a disconnected state, but that seems already

>>>>> to work properly, since your users can auto-reconnect.

>>>>>

>>>>> You'd better post in a network newsgroup, and/or use NetMon

>>>>> or a continuous ping (ping -t) to get some idea of how many

>>>>> packets are lost and then take the issue up with your

>>>>> network provider.

>>>>> _________________________________________________________

>>>>> Vera

>>>>> Noest MCSE, CCEA, Microsoft MVP - Terminal Server

>>>>> TS troubleshooting: http://ts.veranoest.net

>>>>> ___ please respond in newsgroup, NOT by private email ___

>>>>>

>>>>> RandyH <RHollaw@HOTmail.com> wrote on 25 mar 2008 in

>>>>> microsoft.public.windows.terminal_services:

>>>>>> Users are complaining that they are getting kicked off our

>>>>>> TS, a message pops up, I think it's the RDP client, but

>>>>>> it says, The

>>>>>> connection has been lost - Attempting to Reconnect

>>>>>> Session.

>>>>>>

>>>>>> The session reconnects, and the user is back where at the

>>>>>> screen where they lost connection.

>>>>>>

>>>>>> What is causing lost connections?

>>>>>> Should we be tweaking something on the TS?

>>>>>> Like this, HKLM\SYSTEM\CurrentControlSet\Control\Terminal

>>>>>> Server\WinStations\RDP-Tcp\KeepAliveTimeout?

>>>>>>

>>>>>> Tia,

>>>>>> RandyH

[Guest Edward]

Re: Sessions getting disconnected

 

I noticed this thread, (and may start a new one) but I too am seeing this

sort of an issue. It appears quantifibly a bandwidth issue; as in when

bandwidth is a getting really crunched sessions disconnect more often.

 

Given this sort of a scenario where bandwidth is the culprit, wouldn't you

have this sort of issue even if you were using Citrix?

 

In a group of 5 Terminal Servers, with a hardware load balancer in front to

balance RDP connections in, only 200 users max, I see 10-50 disconnects per

day. All of these users are connecting across Lan-to-Lan VPN's.

 

No packets are getting 'dropped' by latency sometimes gets a little high (no

more than 150ms)

 

So can Terminal Services be used across a VPN tunnel?

 

TIA

Edward

 

 

 

"Vera Noest [MVP]" wrote:

> Are they disconnected after some minutes of idle time, or also when

> they are actively working (typing, moving the mouse)?

> _________________________________________________________

> Vera Noest

> MCSE, CCEA, Microsoft MVP - Terminal Server

> TS troubleshooting: http://ts.veranoest.net

> ___ please respond in newsgroup, NOT by private email ___

>

> RandyH <RHollaw@HOTmail.com> wrote on 27 mar 2008 in

> microsoft.public.windows.terminal_services:

>

> > The VPN connection stays connected, just the session drops and

> > then reconnects.

> >

> > RandyH wrote:

> >> I'll ask my users, and report back tomorrow....

> >>

> >> Vera Noest [MVP] wrote:

> >>> When the rdp connection is down, is the whole VPN connection

> >>> down also? Can users still connect to other resources on your

> >>> network, like shared folders, when the rdp session is

> >>> disconnected?

> >>>

> >>> _________________________________________________________

> >>> Vera Noest

> >>> MCSE, CCEA, Microsoft MVP - Terminal Server

> >>> TS troubleshooting: http://ts.veranoest.net

> >>> ___ please respond in newsgroup, NOT by private email ___

> >>>

> >>> RandyH <RHollaw@HOTmail.com> wrote on 25 mar 2008 in

> >>> microsoft.public.windows.terminal_services:

> >>>> They are coming over the Internet via Cisco VPN client.

> >>>>

> >>>> Would I still NetMon or Ping -t?

> >>>>

> >>>> Vera Noest [MVP] wrote:

> >>>>> Are these users coming in over a WAN connection?

> >>>>> The cause of the loss of connectivity can be anything, and

> >>>>> it's most likely lying ouside the TS.

> >>>>> Changing the KeepAlive mechanism only ensures that your

> >>>>> server faster detects that the connection is lost and puts

> >>>>> the session in a disconnected state, but that seems already

> >>>>> to work properly, since your users can auto-reconnect.

> >>>>>

> >>>>> You'd better post in a network newsgroup, and/or use NetMon

> >>>>> or a continuous ping (ping -t) to get some idea of how many

> >>>>> packets are lost and then take the issue up with your

> >>>>> network provider.

> >>>>> _________________________________________________________

> >>>>> Vera

> >>>>> Noest MCSE, CCEA, Microsoft MVP - Terminal Server

> >>>>> TS troubleshooting: http://ts.veranoest.net

> >>>>> ___ please respond in newsgroup, NOT by private email ___

> >>>>>

> >>>>> RandyH <RHollaw@HOTmail.com> wrote on 25 mar 2008 in

> >>>>> microsoft.public.windows.terminal_services:

> >>>>>> Users are complaining that they are getting kicked off our

> >>>>>> TS, a message pops up, I think it's the RDP client, but

> >>>>>> it says, The

> >>>>>> connection has been lost - Attempting to Reconnect

> >>>>>> Session.

> >>>>>>

> >>>>>> The session reconnects, and the user is back where at the

> >>>>>> screen where they lost connection.

> >>>>>>

> >>>>>> What is causing lost connections?

> >>>>>> Should we be tweaking something on the TS?

> >>>>>> Like this, HKLM\SYSTEM\CurrentControlSet\Control\Terminal

> >>>>>> Server\WinStations\RDP-Tcp\KeepAliveTimeout?

> >>>>>>

> >>>>>> Tia,

> >>>>>> RandyH

>

[Guest Hank Arnold (MVP)]

Re: Sessions getting disconnected

 

Edward wrote:

>

> In a group of 5 Terminal Servers, with a hardware load balancer in front to

> balance RDP connections in, only 200 users max, I see 10-50 disconnects per

> day. All of these users are connecting across Lan-to-Lan VPN's.

>

> No packets are getting 'dropped' by latency sometimes gets a little high (no

> more than 150ms)

>

> So can Terminal Services be used across a VPN tunnel?

 

Absolutely. I do it all the time. I've managed several TS servers

(Application and Administrator mode) for long periods (>1 hour) over a VPN.

 

--

 

Regards,

Hank Arnold

Microsoft MVP

Windows Server - Directory Services