time and date

[pacisalbert]

problem cannot adjust even administrator account

[sted]

worst case alter it in the pcs bios

[DaveP]

For clarification:

Standalone or network?

For standalone which OS?

For network: Which client OS and which server OS?

[aerospacemango]

problem cannot adjust even administrator account

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!

[mthomas08]

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.