If you have time sync problems with Hyper-V Guest Systems there is a simple solution for this.
- Time between Server and Active Directory Domain Controller is not correct
- Can’t login because of this
- Can’t add AD Users to local groups
To solve this problem you have to disable Time Synchronization in the Hyper-V Integration Services for each guest. Then restart the Windows Time serviceon the guest. The guests will then correctly synchronize with a domain controller.