Windows 8 VM on Parallels 9 not pulling correct time

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End user is currently running MAC OS X mavericks with Parallels 9, the VM is Windows 8.1. I am currently seeing an issue where the time is completely off from the MAC not just by hours but wrong minutes as well. I have updated both the MAC OS the Parallels application as well as the windows OS. the MAC is pointing to apples default time sync location parallels is set to pull from the MAC OS. Yet I'm still occasionally seeing differences in the times, it seems to be for no specific reason. I have found articles related to running a MAC OS X VM and having that issue but not for Window 8.1.
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My experience with Parallels 8 (haven't upgraded to 9 yet) is that if your Mac is sleeping, it sometimes doesn't update time properly to the VM.

The "fix" or work around is to synchronize to the Domain Controller or an ntp server.
http://technet.microsoft.com/pt-pt/library/cc785223%28v=ws.10%29.aspx
http://technet.microsoft.com/pt-pt/library/cc758905%28v=ws.10%29.aspx
http://www.pool.ntp.org/en/use.html

If you mac gets too far out of sync, you can also run ntpd -q
http://arstechnica.com/civis/viewtopic.php?t=34734
Microsoft just recently released a hotfix which resolves a bug with the time sync when the machine comes out of hibernation - it may address this.  I have the same issue and setup as you - I just applied the fix, keeping my fingers crossed...

It's also rolled up into the July 2014 cumulative release for anyone interested.

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