A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
Hello Leonidha, Thank you for reaching out to us. I am sorry to hear you are having such difficulty as I understand how frustrating this can be.
These are a few steps I recommend you try to resolve this issue: Restart excel, Close other applications, Save file with a new name or location.
Please refer to the link below for further assistance.
https://helpdeskgeek.com/office-tips/how-to-fix-microsoft-excel-document-not-saved-error/ Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.
Regards, Ozi N