CHECK YOUR WINDOWS UPDATES or use the link to download this. It just came in my Win7 updates today, but applies also to Win8.1. If you're having trouble getting Win updates because that horrid Win10 thingy keeps trying to download, then you will LOVE this link: support.microsoft.com/en-us/kb/3050265 . Download it and run it, and finally your machine's update problems will hopefully be solved.
Video shows how to 'obey' the official instructions: its easy-to-remember alias name is vimeo.com/brainout/stopwin10update . I do the instructions live onscreen. A copy will be in Youtube, youtube.com/watch?v=ZC46orDm7to . I did the vid in 1080p, but left it here in 720p default so more folks can see it. The Youtube copy has the 1080p feature as optional.
So you don't need to watch the video unless you don't already understand how to use gpedit.msc.
If you have questions, you can post them either in bleepingcomputer.com/forums/t/590647/great-news-from-msft-new-kb3050265-to-block-win10-updates/ (really helpful folks there), or in my own forum (which gets little traffic, it's contemplative), brainout.net/frankforum/viewtopic.php?f=3&t=104 . If you don't want to join but need to post you can either post here ( brainout.net/frankforum/viewforum.php?f=48 ) or here (where your post stays hidden, only I will see it: brainout.net/frankforum/viewforum.php?f=14 )