error message: 'couldn't save automatically. to avoid losing your changes please copy them before you reload this document'. Once this message pops up I cannot edit the document

Hi @P H
Thank you for reaching out to the Microsoft Q&A Forum. 

I understand how frustrating it is when you encounter a saving error, especially after you've already tried to resolve it by creating a copy of the document. 

Could you let me know if you've had a chance to try these steps? 

1.Sign out and sign back in: Log out of your Microsoft account in your browser, then log back in. 

2.Try a different browser or an InPrivate/Incognito window 

3.Clear browser cache and cookies 

4.Test the file in the desktop application: If you have the desktop version of Word, try downloading the document and opening it.  

5.Try creating a brand-new Word document, copy and paste the content from the original file into it, then save it with a new name to see if the issue persists. 

If these steps don’t resolve the issue, please share more information to help us further investigate the situation and assist you more effectively: 

• Does this issue occur with all documents, or only this specific one? 

• Is the document being co-authored, and are other users editing it at the same time?  

Please understand that our initial reply may not always immediately resolve the issue. However, with your help and more detailed information, we can work together to find a solution.

I am looking forward to your reply. 

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