This all started with the first major update that Microsoft rolled out for Windows 10 last week.
Windows 10 automatically goes back to a previous version whenever this happens.
The company has so far failed to provide a credible explanation for what exactly has gone wrong.
Users within theMicrosoftforums have discovered a rogue entry within the Windows Registry causes the update to fail.
The fix, however, hasnt worked for all the users.
source: www.techworm.net