AnonFiles is a fairly popular service around here. Unfortunately, downloading from AF sometimes gives corrupt files. Why??

Because all files uploaded to AF are wrapped in a 7-Zip archive, you will be notified of a corrupt download when you try to extract it. This page will document possible solutions to this problem when you experience it.

Re-download the file or part

From quick tests, it appears that AnonFiles does random bit flips on data at times. This means that re-downloading could give you a file without any bit flips, or perhaps bit flips in different positions (i.e. a file corrupted differently) likely resulting in increased stress levels.

Repair the file/part with a torrent

1. Extract all part(s) of the file, ignoring any CRC errors
2. If necessary, join all these parts together into a complete (but with errors) file
3. Download the torrent file, and open this in your torrent client
4. Start the torrent then stop it a short time after (this is just to get the torrent client to write some incomplete files to disk)
5. Try finding the incomplete download for this torrent on your disk, if it doesn't exist, you may need to get your client to download a bit of the torrent before it shows up
6. Close your torrent client, including any instance of it in the system tray
7. Replace the incomplete file with the complete file you extracted in steps 1 and 2 above (depending on your torrent client, you may need to rename the complete file first)
8. Start up your torrent client
9. Do a force hash check on the torrent. After it's done, the torrent should appear to be almost complete
10. Just torrent what's left of the file. You should now have a complete file without any errors
11. If you're a man, seed the file back to the community for a while.

Use a good part from another host

This is only relevant if the file is broken into 2 or more parts, and another host has been uploaded to with the same number of parts, and AT doesn't send files to this other host wrapped in a 7-Zip archive.

For example, if a file is uploaded to AnonFiles in 2 parts, and is uploaded to X in 2 parts, but part 2 of the file from AnonFiles gives a CRC error on extraction. You could download part 2 from X, delete the part 2 you got from AnonFiles, extract part 1 of the file you got from AnonFiles, and join this with part 2 from X.

See, that was easy, wasn't it?

Ignore the corrupt file/part

If all else fails, you can just extract the file/part, ignoring the CRC error. If necessary, then join all the parts together and leave it at that. Depending on where corruption occurred, you may in fact have a playable file, perhaps with an odd glitch here or there (such as any lack of censoring).

Download from another source

Durp