I have several 2003 servers in my domain that randomly change their date/time by several days, sometimes. They are all getting their time from an AD server acting as the primary DC.

I have looked in the event viewer to find that in the evening the time just jumps from around 7pm (correct date) to 10am (several days ahead).

to re-sync, I have been issuing the command "net time /domain /set /y" however its not ideal as the server should be functioning before I have chance to issue the command.

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    Have you checked that the timezone is correct on these servers? – Sam Cogan Jul 7 '11 at 9:56

In addition to what Sam said, also check the command net time /querysntp on the server's that it's doing that on. That should tell you the server name that your misguided server is getting the time from. If that isn't correct you can use

net time /setsntp:"mylocalserver"
net stop w32time
net start w32time
w32tm /resync /rediscover
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  • The time-zones are all correct, when querying the servers they tell me that they are getting their time from time.windows.com,0x1 when I enter 'net time' it says current time at the backup AD server however when i type net time /domain /set it asks if im sure i want to sync to the correct AD server, which is also confusing – Z Holt Jul 7 '11 at 13:13
  • net time will tell you the time from the which ever domain controler the server is currently talking to (there's no such thing as a backup DC). I believe by running the command net time /domain /set you are setting the time based on the current domain controler. I don't believe that will set your sntp server to that for the next polling period, you can confirm that by doing net time /querysntp again after you set that. I would check the event log the next time this issue happens, computers will log all sntp events in the system event log. – Nixphoe Jul 8 '11 at 1:51
  • We have two AD servers on site, one used as a backup and another in use, when I issue 'net time' it refers to the backup AD however when i issue 'net time /domain /set' it refers to the PDC in use. in the event log all is fine until 19.55 then the next event jumps 6 days ahead and 3 hours later, the only correspondence of w32time says make sure the time and timezone are correct at the timesource (active AD box) – Z Holt Jul 8 '11 at 7:51
  • also when i querysntp on the affected box, the current value is time.windows.com - should this not be the AD box? – Z Holt Jul 8 '11 at 8:00

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