I have been downloading updates for months... BUT every time I get the same message when I try to run the update.. I am running Win7 X 64.. Why is this " Not a valid win application" message coming up?

Why dont you upgrade to win 10? Then windblows will stop complaining. Its free.......

I'm on the Win 7 x64 OS  and haven't experienced the problem.

My naive suggestion would be to run as administrator: what is called 'elevated command level.'

The sevenforums might have a workaround as well.