Review / Troubleshooting Guide:
If you landed here from Google or Reddit while trying to install a repack (FitGirl, Dodi, etc.) and saw "Unarc.dll returned an error code -11" , don't panic.
Error -11 is frustrating but fixable. Work through the list above before giving up. Reddit's consensus (r/PiratedGames wiki) confirms it's almost always local hardware or permissions, not the repack itself.
⭐⭐⭐⭐ (4/5) – Annoying but solvable.