ISDone.dll/ An error occurred when unpacking! Unarc.dll returned an error code

Sometimes, users face this type of error when installing the game:

isdone,unarc

Solution

  1. Download ISDone.dll and Unarc.dll from the links below:
  2. Extract the downloaded files using WinRAR.
  3. Copy both DLL files (excluding the ReadMe file).
  4. Paste them into the following directories:
    • C:\Windows\System32
    • C:\Windows\SysWOW64
  5. Reinstall the game.
  6. When installing the game, enable the Limit installer to X GB of RAM usage option (if available).

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