Check if the “ISDone.dll It is not found any file specified for ISArcExtract” error appears if you disable your antivirus: Microsoft Defender or any third-party AV. If it’s not, add the installer folder and the target folder where you install the game or app to Antivirus exclusions l...
If you are certain that the game source is reliable, add its installation folder and the folder where it is installed to antivirus exclusions. If this does not help, try disabling your antivirus entirely during the installation. Other Options to Fix the Unarc.dll Error The above methods usual...