Windows 7 on your computer are incompatible Office products installed

[Axel Schmid]

on your computer are incompatible Office products installed

MS EXCEL opens only after this error message

 

[kemical]

I just did a quick search via Google and this is what turned up. Might help?
"Incompatible Office products are installed on your machine" when opening Office documents or browsing OneDrive or SharePoint Site