This error appears when Windows Defender remains active. The loader requires it to be completely disabled for proper operation.
Step-by-step solution
- Download and install the Defender Control utility.
- Run Defender Control as administrator.
- Click "Disable Windows Defender" — the indicator should change color.
- Open Command Prompt as administrator and run:
sc query wdfilter - Verify that the service status shows STOPPED.
- Restart Defender Control as administrator to confirm the changes.