Guest ykffc Posted October 22, 2008 Posted October 22, 2008 OS: Windows 2000 server When we had Daylight saving time effective weeks ago, the system time of this machine failed to adjust automatically (although I have the checkbox on to adjust automatically). I can understand this as Microsoft no longer supports this old version of OS and they no longer produce updates/patches for this. For software compatibility and other reasons we haven't upgraded this machine. However, I don't think it should be the end of the world. It is a matter of seconds to adjust the time by hand. Two days ago I started to adjust the system time from say 13:15 to 14:15 (2:15 pm). But after a while, say after 30 minutes, it was discovered that the system time changed itself back to 13:45. It looks like something in the background is changing the time automatedly. I tried a few times in two days but all failed the same way. Why is that? I have tried to set & unset the "automatic adjust DST" checkbox, reboot the system more than once. Nothing helps. BTW, the machine is part of a domain but I doubt if that matters. I have't heard of a policy that could affect the time !? I heard about software that sounds like "atomic clock synchronization" which might make a machine to automatedly set its time in line with something. But this is obviously not what we shall do with this machine. Can someone tell me what are the other functions that might change the system time of a machine in the background? thanks.
Guest John John (MVP) Posted October 22, 2008 Posted October 22, 2008 Re: what make system time changes? Of course it matters if the machine is part of a domain. Is the time properly set on the domain controller? Basic Operation of the Windows Time Service http://support.microsoft.com/kb/224799/ John ykffc wrote: > OS: Windows 2000 server > > When we had Daylight saving time effective weeks ago, the system time of > this machine failed to adjust automatically (although I have the checkbox on > to adjust automatically). I can understand this as Microsoft no longer > supports this old version of OS and they no longer produce updates/patches > for this. > > For software compatibility and other reasons we haven't upgraded this > machine. However, I don't think it should be the end of the world. It is a > matter of seconds to adjust the time by hand. > > Two days ago I started to adjust the system time from say 13:15 to 14:15 > (2:15 pm). But after a while, say after 30 minutes, it was discovered that > the system time changed itself back to 13:45. It looks like something in the > background is changing the time automatedly. I tried a few times in two days > but all failed the same way. Why is that? > > I have tried to set & unset the "automatic adjust DST" checkbox, reboot the > system more than once. Nothing helps. BTW, the machine is part of a domain > but I doubt if that matters. I have't heard of a policy that could affect the > time !? > > I heard about software that sounds like "atomic clock synchronization" which > might make a machine to automatedly set its time in line with something. But > this is obviously not what we shall do with this machine. Can someone tell > me what are the other functions that might change the system time of a > machine in the background? > > thanks.
Guest ykffc Posted October 24, 2008 Posted October 24, 2008 Re: what make system time changes? Thank you John. Before I found the Primary DC was not set correctly but the secondary was (all DC runs Win2003 server). Time were both correctly set already but still exactly the same problem. I need to read your recommended KB. "John John (MVP)" wrote: > Of course it matters if the machine is part of a domain. Is the time > properly set on the domain controller? > > Basic Operation of the Windows Time Service > http://support.microsoft.com/kb/224799/ > > John > > ykffc wrote: > > > OS: Windows 2000 server > > > > When we had Daylight saving time effective weeks ago, the system time of > > this machine failed to adjust automatically (although I have the checkbox on > > to adjust automatically). I can understand this as Microsoft no longer > > supports this old version of OS and they no longer produce updates/patches > > for this. > > > > For software compatibility and other reasons we haven't upgraded this > > machine. However, I don't think it should be the end of the world. It is a > > matter of seconds to adjust the time by hand. > > > > Two days ago I started to adjust the system time from say 13:15 to 14:15 > > (2:15 pm). But after a while, say after 30 minutes, it was discovered that > > the system time changed itself back to 13:45. It looks like something in the > > background is changing the time automatedly. I tried a few times in two days > > but all failed the same way. Why is that? > > > > I have tried to set & unset the "automatic adjust DST" checkbox, reboot the > > system more than once. Nothing helps. BTW, the machine is part of a domain > > but I doubt if that matters. I have't heard of a policy that could affect the > > time !? > > > > I heard about software that sounds like "atomic clock synchronization" which > > might make a machine to automatedly set its time in line with something. But > > this is obviously not what we shall do with this machine. Can someone tell > > me what are the other functions that might change the system time of a > > machine in the background? > > > > thanks. > >
Guest John John (MVP) Posted October 24, 2008 Posted October 24, 2008 Re: what make system time changes? You're welcome. Another thing that might be affecting this is if incorrect changes were made when applying DST fixes for the new(er) dates. Someone might have done this manually with tzedit and they may have gotten the dates wrong or they may have changed the GMT bias... or the machine might simply be set in the wrong time zone. John ykffc wrote: > Thank you John. > > Before I found the Primary DC was not set correctly but the secondary was > (all DC runs Win2003 server). Time were both correctly set already but still > exactly the same problem. I need to read your recommended KB. > > > "John John (MVP)" wrote: > > >>Of course it matters if the machine is part of a domain. Is the time >>properly set on the domain controller? >> >>Basic Operation of the Windows Time Service >>http://support.microsoft.com/kb/224799/ >> >>John >> >>ykffc wrote: >> >> >>>OS: Windows 2000 server >>> >>>When we had Daylight saving time effective weeks ago, the system time of >>>this machine failed to adjust automatically (although I have the checkbox on >>>to adjust automatically). I can understand this as Microsoft no longer >>>supports this old version of OS and they no longer produce updates/patches >>>for this. >>> >>>For software compatibility and other reasons we haven't upgraded this >>>machine. However, I don't think it should be the end of the world. It is a >>>matter of seconds to adjust the time by hand. >>> >>>Two days ago I started to adjust the system time from say 13:15 to 14:15 >>>(2:15 pm). But after a while, say after 30 minutes, it was discovered that >>>the system time changed itself back to 13:45. It looks like something in the >>>background is changing the time automatedly. I tried a few times in two days >>>but all failed the same way. Why is that? >>> >>>I have tried to set & unset the "automatic adjust DST" checkbox, reboot the >>>system more than once. Nothing helps. BTW, the machine is part of a domain >>>but I doubt if that matters. I have't heard of a policy that could affect the >>>time !? >>> >>>I heard about software that sounds like "atomic clock synchronization" which >>>might make a machine to automatedly set its time in line with something. But >>>this is obviously not what we shall do with this machine. Can someone tell >>>me what are the other functions that might change the system time of a >>>machine in the background? >>> >>>thanks. >> >>
Guest TestTurtle Posted October 27, 2008 Posted October 27, 2008 Re: what make system time changes? Try this utility...it also can auto set: http://tf.nist.gov/service/its.htm and this: http://www.grystmill.com/articles/tz_update.htm Please read the pages/docs first and you'll be fine.
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