No, I've been working with office 2010 since about 4-5 years ago. Windows7 I've upgraded around a year or more ago. everything was working just fine. The only thing that I can think of that changed is a windows update (automatic) and right after that the problem started.
Tried several things:
* Rebooted the system, obviously
* Tried opening excel in safe mode - no difference
* Same, as admin - no difference
* Installed and ran OFFCAT as suggested by Microsoft..... nothing
* Updated excel 2010 to 2013 - still nothing