Q: How to correct time on Windows PDC server without affecting logons I know how to set an authoritative time server in Server 2008 R2. That's not what this question is. I want to know how I can change the time on a network where the PDC (and therefore everything) is a month out of date?
I know that a 5 minute difference in time between clients and the domain prevents logons, so just changing the time on the PDC will break everything.
What is the best way to fix this?

A: As a high level overview my approach would be to try and do the following:


*

*Ensure that NTP is functioning correctly on your domain and make sure you know which server(s) control the time.

*Ensure that all of your clients and servers are actually using NTP

*On your clients, reduce the MaxPollInterval and increase MaxPosPhaseCorrection. (This may help: http://technet.microsoft.com/en-us/library/cc773263(WS.10).aspx)

*Make the change, allow everything to synchronise

*Reverse the client changes

*Now, because you did all of the above in a lab, try it in real life ;)
