: Install the game through verified digital storefronts like Battle.net Verify Integrity
If the installation stops with an "ISDone.dll" or "Unarc.dll" error while processing .bin files:
Ensure that all RAR parts and .bin files are in the same folder before running setup.exe . Some users have found success by moving their entire installation or Steam folder to a standard directory like C:\Program Files (x86) to avoid permission-based path errors.