Many repack installers use generic packers that trigger false positives. Turn off Windows Defender or your AV only during installation. Re-enable it immediately after.
Run a full antivirus scan immediately if you’ve installed anything from an untrusted source. Stay safe and game responsibly.
If you have obtained a legitimate, virus-scan-approved copy of the repack (from a trusted scene group like FitGirl, Mr DJ, or ElAmigos), follow this standard procedure: