Sure, that's general information but I deduce from what the poster said that it is happening on many programs. This points to exe file problems, in which case the "Open With" option will not even be available.
I think the exe fix given in the link at post #1 is the best way to go for starters. If there are still specific programs that won't open then fine, your response is the next thing to try.
Always pop back and let us know the outcome - thanks