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Hi Caroline,
I’m really sorry to hear that this issue has caused you to lose several hours of work.
Before making further changes to the workbook, please create a copy of the current file and save it somewhere outside the Downloads folder to avoid overwriting any data when attempting recovery.
Please try the following:
- In Microsoft Excel, go to File > Info > Manage Workbook > Recover Unsaved Workbooks
- Open any recovered files and check the date and time. If you find the missing edits, use Save As immediately and give the workbook a different name
- If Excel previously stopped responding or restarted, reopen Excel and check the Document Recovery pane for the most recent recovered copy.
- Search the computer for the workbook name and sort the results by Date modified. Please check whether there are multiple copies in Downloads, Documents, Desktop, or an email attachment folder
To help determine why this is happening, could you please share more details:
- What is the file extension (.xlsx, .xls, or .csv)?
- When you selected Save, did you receive any warning, read-only message, compatibility notice, or sign-in prompt?
- Do multiple copies of the file appear in the Downloads folder?
For future editing, please move the workbook from Downloads to Documents or OneDrive before editing. Saving it to OneDrive and enabling AutoSave provides version history and offers better protection against this type of data loss.
Hope you're able to get this resolved soon. I'm looking forward to your response.