Best. Error Message. Ever.
You’re kidding me, right? What you’re saying is, this:
A) You saved my document
B) You can’t re-open the document
C) To fix this, I should close and re-open the document
I think this means that the solution to my problem is precisely the problem itself. This seems like a trap.
note: Just in case you can’t read the awkwardly stout dialog it says “The document was saved successfully, but Excel cannot re-open it because of a sharing violation. Please close the document and try to open it again.”