Cannot access path or invalid directory issues

#Windows defender has "quarentined" Raiden launcher

Microsoft made the worst antivirus software possible. It will re-enable, delete exclusions, and reset itself after each PC reboot. Basically you just open Windows Security>Virus and Threat Protection>Manage settings>Real-time protection - OFF, scroll to the bottom, and locate Exclusions>Add>Locate where client.exe is downloaded and set that exe as excluded.