Dear Gitanjali Cloud Admin
Good day! Thanks for posting in the community. We are happy to help you.
According to your description, I would like to collect more information to troubleshoot.
- May I know how you open this SharePoint workbook, from the Excel application (File> Open> select the online location and open it) or from the local library sync folder (if you have synced the SharePoint library to local)? If you open this workbook from the local library folder, please try to open it from the Excel application directly, check if the situation happens again or not.
- Does the situation happen in opening a specific workbook or also in opening other SharePoint workbooks?
We look forward to your response. Thanks for your cooperation.
Sincerely,
George | Microsoft Community Moderator