In Excel: open Excel and check File ▸ Info ▸ Manage Workbook ▸ Recover Unsaved Workbooks, then save any recovered copy immediately under a normal file name.
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. The same idea underpins a lot of everyday Excel work, so the few minutes spent getting it right here pay back across every sheet you build afterwards. Treat it as a pattern, not a one-off, and it stops being something you look up and starts being something you reach for. 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 tool above 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. If there is any chance you will reuse this, drop it into a small template tab right now: a labelled input area on the left and the formula beside it, checked once against the tool above. Next time the same question comes up, the answer is a single paste away instead of a rebuild from memory.
In Google Sheets
If you are in Google Sheets rather than Excel, the good news is that the formula shown here is identical and the workflow barely changes — menus sit across the top instead of in a ribbon, and a few function names differ slightly, but anything you build here moves across with little or no rework. 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, the tool proves it, and the detail above shows why it holds — so the next time a colleague asks, you can answer without reaching for search. If you take one thing from this page on “open unsaved excel file”, make it the habit rather than the keystrokes: set the problem up with labelled inputs, reference those cells, and let Excel do the recomputing. Bookmark the page for the syntax, but do the example once in a blank sheet and check it against the tool above — five minutes of hands-on practice fixes the method in memory far better than re-reading, and it surfaces the small snags while they are still harmless. After that the technique is genuinely yours: faster than searching for it again, and reliable enough to drop into work that other people depend on.
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.