If "Fix 17 rar" refers to a file that is corrupted or won't extract, you can use built-in tools or third-party software to attempt a recovery.
: Open WinRAR, navigate to the corrupted file, and select Tools > Repair archive . Choose a location for the new "rebuilt" file. Fix 17 rar
: WinRAR can often fix minor corruption if the creator included a "recovery record" during compression. If "Fix 17 rar" refers to a file
Rar files automatically failing the download - Mozilla Support navigate to the corrupted file