Check Time Source and Sync with pool.ntp.org

To compare the system clock with real internet time, go to http://www.time.is. 

To see the source of time for a computer, from an admin command prompt, run:

w32tm /query /source

For more information, run this:

w32tm /query /configuration

Possible responses:

• The hostname of a domain controller, which means it is getting the time from another domain controller
• Free-running System Clock, which means it is keeping its own time

On the server that is keep its own time, to change the time source to pool.ntp.org, run this:

w32tm /config /manualpeerlist:"pool.ntp.org" /syncfromflags:manual /reliable:YES /update

net stop w32time

net start w32time

w32tm /resync /force

w32tm /query /source

This might take a few minutes to gradually drift back into sync.