This file is a standard Windows system file. It will never appear on a clean installation of Windows. Consequently, any security software (Windows Defender, Malwarebytes, Avast, Norton, etc.) will treat it with immediate suspicion.
Instead, cls-lolz x64.exe offers a dead-end message. For a technical user, this means breaking out Sysinternals tools. For a casual user, it means giving up. failed to start cls-lolz x64.exe
Antivirus software often flags decompression tools as "false positives" and blocks them from running. Temporarily turn off Windows Defender or your third-party antivirus before starting the setup. Add the installation folder to your Antivirus Exclusion List to prevent files from being deleted mid-install. Enable the "Limit RAM" Option If you are using a FitGirl repack, check the box that says "Limit installer to 2GB of RAM usage" at the very beginning of the setup. This file is a standard Windows system file