Macrium Reflect caused my W10 update fail ,.... , remove it , and delete macrium folder out of c:\boot , fixed the problem

 https://answers.microsoft.com/en-us/windows/forum/windows_10-update/windows-10-update-failed-tried-windows-10-update/a410e61b-963f-4158-a534-188b7a38a726

I downloaded w 10 enterprise ISO, mount it, and run setup, still fail

run setupdiag, indicates bcd error

rebuild bcd, still bcd error after 6 hours

eventually found a link on the net point finger at Macrium reflect

 

removeMacrium Reflect , and delete macrium folder out of c:\boot , fixed the problem

this w10 update problem bugged me for a few months