I am having exactly the same issue.
Aftet the 17th update, I was told it installed correctly, but then I had a little cross and was told I needed to fix, which I did.
Today, the 20th, another update, installs correctly, again , I have to fix.
It only ever turns off the Computer / Email, not the internet and other one, and its normally this the Mcafee updates, so I assume this is a problem being caused by the update?
I have scanned for a virus, nothing, the computer indeed shows no sign of a virus. but it is becoming frustrating and worrying as this is the second time now.
I have followed the steps above with no joy.