How to disable "A change has been made in <filename>" alert?

[samspade]

Suddenly I am getting a pop-up each time I change a cell's content.
"A change has been made in <filename ! tabname>"
How can I disable this?
This pop-up occurs in both new and old files.
Did I trigger some sort of syncing with 365/Onedrive?

I am using Excel 365 and save to my hard drive.
Alert occurs whether I an logged in to OneDroce or not.

 

[johnnyL]

Have you tried the 'Review' tab\'Track changes' ?

 

[johnnyL]

Actually, that option may not be available for version 365.

You might have a look here. That has some options you may want to check into.

 

[samspade]

Hi I don't see a 'track changes' option in Excel 365.
I've looked the File-Account and File-Options settings but can't see anything relevant that could be causing the pop-up.

 

[samspade]

I signed out/unlinked OneDrive but still have the same issue.
Most perplexing, in 30 years using Excel I've never seen this issue/alert.