Hi,@Morris, Asante
Does the computer in question have the same office version as other computers?
There is no option to undo a save on a networked excel file.
Please click Options in excel -> Under Save tab -> Uncheck “AutoSave OneDrive and SharePoint Online files by default on Excel” to compare the result:
Note, if we uncheck the option, we will not able to see changes from others in real time, we need to save the file manually and then view changes.
We could also clear office upload center cache to check if the issue still exists:
https://www.risual.com/2018/07/clearing-the-office-upload-center-cache-to-fix-sharepoint-sync-issues/
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