What to prepare
These details help with the first profile check.
- All volumes and their original filenames
- RAR3 or RAR5 if known
- The exact extraction error
- Safe password hints and whether filenames are encrypted

A multipart archive is a set. Missing one volume can prevent validation even when the password is correct, so collect the parts before starting recovery.
Keep the complete set in one folder with the original names, such as .part1.rar, .part2.rar, or the older .r00/.r01 pattern. Do not rename parts to make them look sequential unless you have a verified copy.
Recovery process
Keep the complete set in one folder with the original names, such as .part1.rar, .part2.rar, or the older .r00/.r01 pattern. Do not rename parts to make them look sequential unless you have a verified copy.
A missing or damaged volume can produce extraction errors that look like a wrong password. Test the archive locally and record the exact message before uploading anything.
For a supported recovery, the service needs enough encrypted headers or content to validate candidates. Do not upload unrelated backups or private files from the same directory.
These details help with the first profile check.
The outlook depends on the actual encryption profile.
Common situations
For a supported recovery, the service needs enough encrypted headers or content to validate candidates. Do not upload unrelated backups or private files from the same directory.
Next step
Start with format detection and choose the appropriate path only after the file is identified.