Stop Windows from restarting your computer after an automatic update

Click on Start and select Run

Type “gpedit.msc”

Navigate to  Local Computer Policy | Computer Configuration | Administrative Templates | Windows Components | Windows Update

On the right hand side, select and double click on the entry entitled: “No auto-restart with logged on users for scheduled automatic updates installations”

Select the option “Enabled” and click Apply and/or OK

And voila!

NB: Don’t forget to restart your computer from time to time ;)