All the tips/hints/fixes/other information posted here are at your own risk. Some of the steps here could result in damage to your computer. For example, using a Windows registry editor like RegEdit could result in unintended serious changes that may be difficult or impossible to reverse. Backups are always encouraged.

18 October 2009

Internet Time Sync - Reset to Fix Error on Vista

Internet Time sync using NTP servers causes frustration for a lot of Windows users. The following instructions will reset the NTP run-time and adjust the NTP server setting. Make sure you haven't set conflicting settings in Group Policy.

1. The default server,, is just not as reliable as some other NTP servers publicly available. However, the best practice now is to sync to a NTP pool and/or your local university's or ISP's NTP servers. Get the list of servers for your location at the NTP Pool Directory. Example:

2. Run the following commands from an Administrator command prompt:

net stop w32time
w32tm /unregister
w32tm /unregister (yes, again)
w32tm /register
net start w32time
w32tm /config "/,0x9,0x9,0x9,0x9,0x9" /syncfromflags:MANUAL
w32tm /config /update

3. Now you can check to see which server you are currenly connected to:
w32tm /query /source
w32tm /query /peers

4. To sync your PC's clock to the time server's manually at this point (it will update according to the default schedule):
w32tm /resync

That should do it!

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