After the Anniversary edition came out for Windows 10, many people have had the probelm of updating their OS.
What are some of the fixes?
Apparently KB3189866 will hang the OS.
Download and apply this KB (full download of the KB is listed below). This will update your OS and keep the downloads smooth.
Which one do you download? If you right click on Your-PC, you’ll be able to see if you are 64bit or 32bit.