Issue
The user cannot edit the document and, for example for an Excel spreadsheet, gets the error message before the document is even fully opened. "We found a problem with some content in '.xlsx'. Do you want us to try to recover as much as we can? If you trust the source of this workbook, click Yes."
When you click Yes, the following notification displays:
When you click Close, at the top of the sheet, just under the Excel ribbon, you see the error "AUTOSAVE TURNED OFF This workbook contains features that prevent it from using AutoSave. Please save your workbook manually."
Cause
There is something in the spreadsheet or a feature enabled that is stopping the AutoSave.
Solution
Export the document and save it locally.
You may need to copy out the content to a new spreadsheet. Also, ensure it has been saved in the new Excel file format (.xlsx not .xls).
To re-upload the spreadsheet, in the drawer of the document, upload the fixed copy of the document.