Windows updates failure

DongKyuK

Bit poster
Hi

My Windows 8.1 have tried to update itself.
Whenever Windows updated approch 100% of progression,
all of sudden it says "Update can not be completed. return to old one"
After that, it takes so many time to return original one.

How can I fix it?

System info

OS: Mavericks OS X 10.9.X
Parallels 9
Build: 2422
Guest OS: windows 8.1
 
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