My shared excel file only lets three out of the four of us use it. The 4th
person can open the file, but it's not shared so she can read but not edit.
None of the macros work. I enabled all macros in the trust center., but that
didn't help.

Another odd thing - her excel title bar only reads "Microsoft Excel". The
rest of us see "filename.xlsm [Shared] - Microsoft Excel".

Any ideas on what I should try next?