I was working away on my PC today and was getting bugged by the Windows Update restart reminder, having been bitten by its restart in the past I wanted it to leave me alone.

I had stacks of SSH sessions open, web sites and files, it was not the time for a reboot and I didn’t want it to decide to restart when I got up to make a drink.

A quick google search helped me out!  Running this command (from a run prompt or from within a command prompt) will stop the message appearing and allow you to continue working, uninterrupted and reboot when your good and ready.

sc stop wuauserv

Source: Lifehacker