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#11
I don't know.I only specialize with fixing such kind of issuess.See some examples from our Update error codes 800B0100 and 80073712... Tried EVERYTHING, HELP!
Unable to install updates because of 800B0100
Unable to update KB2079403 due to error 800B0100
you can find more of them such kind of guys on our forum.
Sometimes it caused by any application,hardware issue but sometimes it's really hard to explain
Don't forget install Windows6.1-KB979916-x64.msu from my link (probably you don't have installed yet) +restart,when you will do it then you can try run Windows Updates again