Recovered Files Have the Wrong Extension: How to Identify Them

A recovery scan may return a file whose assigned extension does not match its real contents. Renaming it can help an application recognize it, but renaming cannot reconstruct missing data.

What to check first

Separate a naming problem from corruption. A complete file with an incorrect suffix differs from a truncated file that lacks its original structure.

A practical recovery sequence

1. Locate and preserve the evidence. Keep an untouched copy and inspect the candidate with a trusted file-identification tool or an application's open dialog. Do not execute unknown recovered files.
2. Check the most relevant recovery source. If the detected format is clear, rename a working copy with the matching extension. Keep a note linking the new name to the original scan result.
3. Keep a separate working copy. Try opening the copy in the appropriate application. If it still fails, compare another recovered candidate or a backup rather than cycling through random extensions.

Keep the recovery attempt reversible

Keep a record of the full path, not just the filename shown in a recent-items list. A file on a network share or in an online-only cloud location is not necessarily stored on your Windows disk. Recovery choices should follow the actual storage location. When a local file was truly deleted, limit further writes to that physical disk while you decide how to recover it. Installing a tool or saving scan results on the affected disk can consume space that previously held deleted data.

How to verify the result

Check multiple pages, sheets, or media sections; a readable first screen does not prove the entire file is intact.

Record which files you checked and which remain uncertain. Keep unverified candidates separate from files you have confirmed are usable; that distinction matters if someone else needs to continue the work.

The mistake to avoid

Do not change every recovered file to one extension or treat a successful rename as proof of successful recovery.

If files are still missing

For an actual deletion from a stable, accessible local device, Drecov’s data recovery resources provide another starting point. If you choose to evaluate its software, use the Drecov download, confirm support for your device and filesystem, and keep installation and recovered output off the affected storage. Recovery is not guaranteed. Software cannot substitute for missing encryption credentials, cloud permissions, or unreadable hardware.

Browse related data recovery guides for other storage situations. For platform-specific controls, use the official references below; menu names and available recovery options vary with application, account, and operating-system version.

References and further reading

• Microsoft: backup and restore with File History