Active Directory Time Synchronization Problems with Hyper-V
We have two active directory domain controllers, one in the physical machine and another one in Windows Hyper-v guest. Recently I have noticed that virtual DC (eg. VDC01 – hyper-v guest) time is not syncing with physical DC (eg. PDC01 as indicated in registry @ ../HKEY_local _machine/system/CurrentControlSet/services/w32time/parameters) as a result drive letters mapping from SAN machine (CIFS) were not working.
C:\>netdom query fsmo
Schema master PDC01.group.local
Domain naming master PDC01.group.local
RID pool manager VDC01.group.local
Infrastructure master PDC01.group.local
The command completed successfully.
Check server was sync with which server. (eg. Internal DC or external time server)
c:\> w32tm /query /status
To prevent guest operating system from synchronizing its time from host machine, I unchecked Time synchronization from Hyper-V Manager Service under “Management>Integration Services”.
Both the domain controller now is having same time and my CIFS share (drive letter mapping from login scripts) from SAN machine running fine.