I have Windows Updates set to "Check for updates but let me choose whether to download and install them". However, Windows keeps changing back to "install updates automatically".
In this post I read that an antivirus can change this setting. However, I have no antivirus installed at this moment.
In this other post I read that Windows Live Essentials can cause this issue, but I don't have that installed either.
I have just reinstalled Windows 8.1 x64 today and the only other software I have installed so far is AMD Catalyst, Firefox, MS Office, and WinRAR (none of which should be changing Windows Update settings)
I've noticed that Windows Update settings have been changed after my PC restarts following the installation of updates.
This issue has already caused my PC to become unable to boot twice since I use Windows custom themes and I need to disable them before Windows updates. However, with automatic updates, I don't get a chance to disable them and then it's too late.