A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
Hi KaterinaJ!
I'm Jen, an independent advisor and a Microsoft user like you. I'd be happy to help you out with this issue.
Try to repair your office installation and see if it fixes the issue.
Open Microsoft Windows Settings.
Click Apps to open the Apps & features window.
Find and click your Microsoft Office 2016 application in the list.
Select Modify, then "Online Repair", and follow the onscreen instructions.
Once the fix is applied, restart your computer.
Then, re-try opening your excel workbook and check if the changes get saved.
If the above method doesn't work, kindly try the other solutions mentioned in this thread.
https://answers.microsoft.com/en-us/msoffice/fo...
I hope this information helps. If you have any questions, please let me know and I'd be glad to assist you further.
Thank you and Best Regards!
Jen :)