A cumulative update is a Windows update that contains a bunch of previous updates bundled as one. It’s useful when you haven’t updated in a while because it lets you jump to a certain Windows milestone (like the Anniversary Update) without installing those past updates one by one. Unfortunately, cumulative updates can be tricky as evidenced by Cumulative Update KB3189866, which, according to user reports, can get stuck at numerous points throughout the update process — namely at 45%, 46%, 48%, 49%, and 95%. If you’re trying to install this cumulative update but progress keeps halting at one of those...
Read the full article: The KB3189866 Windows 10 Update Is Stuck: What to Do?
