A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
Hi Erica,
Sorry for all the inconvenience it may has caused.
Based on your description, it seems like only one specific workbook disappeared in Excel for Mac. In this situation, please check following details so that we can narrow down the cause and move further in this thread.
1.Do you remember where is the workbook used to be saved? If it is saved in your OneDrive, we can restore the file very possibly. Please sign in www.office.com and see if you can find it in online. If so, just open it and click Open in Desktop app. If you can't find it in Files, please check the OneDrive Recycle Bin.
2.If the workbook is saved in local folders, we may sorry to convey there has limited resource we can do for you from the Office side. Besides, you can have a try with Time Machine only if you turned on this feature on Mac before. For the reference: Restore items backed up with Time Machine on Mac - Apple Support.
3.May I know if the TMP folder for Excel you mentioned is the location as ~/Library/Containers/com.microsoft.Excel(in Catalina) or Microsoft Excel(in Big Sure)/Data/Library/Application Support/Microsoft where is used to save some corrupted files?
Before getting any updates from your side, here are something else you need to do.
1.For the limited options concern, please sign in Excel first. Click the icon on the top-right corner in the shared screenshot and sign in your account.
May I know if you have used Excel on Mac without signing in for the past 6 months? AutoSave is a feature only available to be connected with OneDrive. For the reference: How do I turn on AutoSave? - Office Support (microsoft.com) while AutoRecover only works for the files experienced unsaved or corrupted.
2.After signing in, please share with me the screenshot of the version of Excel on your Mac for a better troubleshooting. Open Excel>click Excel button(Besides the Apple icon) on the top-right corner>click About Microsoft Excel and take a full screenshot of the window.
Appreciate your effort and patience on trying above suggestions, post back the test results and see what we can do for the next action.
Best Regards,
Mia