Hi,
Check the following help documentation for assistance, even though it is aimed at Windows 7, but still can be used for Windows 8.
Windows Update error 800B0001
http://windows.microsoft.com/en-sg/windows/windows-update-error-800b0001#1TC=windows-7
If the System Update Readiness Tool does not correct the problem, you'll need to repair Windows, use DISM command is a good way, for more information please refer to this kb.
https://support.microsoft.com/en-us/kb/947821
Regards
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