One of the recent issues in managing Windows Server 2012 is the way Automatic Updates works by default. If automatic updates are installed on a server, it may or may not automatically reboot the server or PC.
At the log in screen, you may see this message.
Upon logging in, you may be faced with the prospect of the server rebooting in 15 minutes. The countdown timer has started and there is no apparent way to click on a “Postpone” button.
In many cases, this will cause some distress. Particularly if this is a Hyper-V host server, and you have an entire network of 120 users accessing the virtual machines!
Fortunately, there is a fix to prevent the server from counting down and restarting.
- Open an administrative command prompt.
- Type NET STOP WUAUSERV
to stop the Windows Update service.
This will stop the Windows Update service, and stop the countdown timer until the server is restarted manually. Don’t forget to restart the server at the next possible opportunity.