I have this annoying problem. I can't update to the latest build. I currently have build number 1607 and windows tries to automatically update to build 1709. It downloads the update, but only makes it to 81% during the install, and craps out. The screen says "this will take a while" ok...but after 12hrs. it's still at 81%! I've tried to update this 4 times and it just won't complete the install. What can i do? All other updates install just fine.