Tuesday, November 25, 2008

Xen - Issues with Windows DomU client clocks

Time is off by an hour in my XEN vm

Quote:

There is a RealTimeIsUniversal registry flag hidden in the windows registry that can be set (its not in by default) to let Windows interpret the RTC as UTC as well.
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\TimeZoneInformation] "RealTimeIsUniversal"=dword:00000001

Summary:

The ultimate solution is to probably run an NTP client under the Windows environment to force the software clock to slave properly.

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