time and date

problem cannot adjust even administrator account

worst case alter it in the pcs bios

For clarification:

Standalone or network?

For standalone which OS?

For network: Which client OS and which server OS?

Quote:

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Originally Posted by pacisalbert

problem cannot adjust even administrator account

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Check your domain controller. If this is out by more than 5 minutes, you won't be able to log on.....This is the exact trouble that we ran into this morning!

Yeah I have had problems, usually when the timesync I use has decided to stop working and I have to do another source.

Quick fix is manually make sure the servers time are correct. Bios on the PC is a good place to check too.