I try to save an Excel file with Ctrl+S, but that does not seem to work.
In particular, when I close the file, Excel asks: "Want to save your changes to ... ?" If I press "Don't Save", the changes made before pressing Ctrl+S are not saved.
If I press "Save" from the File menu, then Excel does not ask "Want to save your changes to ... ?", and the changes are indeed saved.
Ctrl+S is working in other applications. I am having this problem only with Excel.
Can one explain this behavior and teach me how to make Ctrl+S work with Excel?
Added: There seem to be no active add-ins: