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. Before you run it on a workbook other people depend on, try it on a copy or a few rows first. Undo only reaches back through the current session, so a quick trial run is the cheapest way to see exactly what will change before the file is saved and shared. For “lost excel spreadsheet recovery”, the reliable version is a short checking loop, not just the first command that appears to work. Run it on a deliberately small range first, watch how the affected sheet change, and only then apply the same setup to the full sheet. 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. That is what makes a layout choice that keeps the sheet readable and sortable useful in real work: repeatable, auditable, and not dependent on memory or luck.
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. When the result is not what you expected, undo straight away rather than repairing it by hand — undo restores the sheet exactly, while manual fixes tend to leave small inconsistencies behind that surface later.
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. Nothing on this page is behind a login or a download: the exact answer is at the top, and the detail below it is there for when you need it. That is the whole promise here — the answer first, and just enough context to make it stick. If you take one thing from this page on “lost excel spreadsheet recovery”, make it the order of checks rather than the individual clicks: confirm what is selected, apply the step, and look at the result before moving on. That small routine is what keeps Excel work predictable when the same task comes back in a slightly different workbook.
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.