In Excel: open Excel and check File ▸ Info ▸ Manage Workbook ▸ Recover Unsaved Workbooks, then save any recovered copy immediately under a normal file name.
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Reopen Excel before creating many new temporary workbooks.
Go to File ▸ Info ▸ Manage Workbook ▸ Recover Unsaved Workbooks.
Open the newest relevant file and verify the contents.
Use Save As immediately, then enable AutoSave or shorten the AutoRecover interval.
What this does
Excel recovery depends on AutoRecover and whether Excel had time to save a temporary copy. Unsaved workbook recovery looks for files Excel captured before a crash or accidental close. It is not the same as opening a deleted file from the Recycle Bin or restoring a previous version from OneDrive, SharePoint or File History. Start from the symptom: note the exact message or behaviour, when it appears and which file it affects. That separates a cause in this workbook from a setting, a protection state or a product limit. The difference between a quick fix and a sheet you can trust is the extra minute you spend validating “open unsaved excel file”. Start on a copy or a tiny sample, keep the affected cells visible, and compare the result with the outcome you expected before you touch the real workbook. When this is a ribbon command, the selection matters more than the button: confirm the range, apply the command, then spot-check the output before saving. The point is a data step that keeps your analysis trustworthy, but the practical win is that someone else can open the file and understand what happened without asking you.
A worked example
Excel crashes while Book1 has not been saved. Reopen Excel, go to File ▸ Info ▸ Manage Workbook ▸ Recover Unsaved Workbooks and look for a timestamped copy. Open it, inspect the latest changes, then Save As Payroll-Q2.xlsx so it becomes a normal workbook. Recovery content matters because users arrive stressed and need the exact path first, then a realistic explanation of what AutoRecover can and cannot do. Write down what you changed while troubleshooting. If the problem comes back, that list tells you where to look first.
In Google Sheets
This is a command rather than a formula, so there is no syntax to carry over. Google Sheets arranges its commands in menus across the top instead of a ribbon, names some of them differently and does not have every Excel command — look for the equivalent in the Sheets menus or its help before assuming the steps match. The aim was to get you unstuck fast and leave you a little more capable than a copy-paste would. The answer is at the top and the detail above shows why it holds — so the next time a colleague asks, you can answer without reaching for search. The short version of “open unsaved excel file”: identify the exact symptom, check the listed causes one at a time, and keep a copy of the file until the fix is confirmed.
Common mistakes
- Continuing to work for hours before checking recovery, which can overwrite temporary files.
- Assuming AutoRecover is a backup system; it is a crash-recovery helper.
- Recovering the wrong timestamped copy and losing later edits.
- Forgetting cloud version history when the file was stored in OneDrive or SharePoint.
Frequently asked questions
Where are unsaved Excel files recovered?
Use File ▸ Info ▸ Manage Workbook ▸ Recover Unsaved Workbooks.
Can Excel recover every unsaved file?
No. Recovery only works when AutoRecover captured a temporary copy.
What should I do after opening a recovered file?
Save it immediately with a normal name and location.