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Right-click the setup file → Run as administrator . This prevents permission-related extraction failures.

Do not re-download the 100GB file. You do not have a corrupted archive. You have a Windows limitation. Implement these 7 fixes, and watch your installation finish successfully. isdonedll error unarcdll error7 best

Open Windows Security , go to Virus & threat protection , select Manage settings , and toggle Real-time protection to Off . Right-click the setup file → Run as administrator

Click OK on the confirmation box, close the command prompt, and attempt your installation again. 5. Install the Game in Safe Mode go to Virus & threat protection