The critical error is one of the most frequent issues. It is typically related to an active antivirus or the system blocking the loader file.
Step-by-step solution
- Disable Windows Defender and Smart Screen.
- Turn off Core Isolation in Device Security settings.
- Uninstall third-party antivirus software and Faceit Anti-Cheat.
- Right-click the loader file, open Properties. If an "Unblock" option is present — check it and click Apply.