Make sure that you have installed the latest version of BattlEye on your PC. Also please make sure that your firewall and antivirus do not block the files used by BattlEye, namely BEService.exe and BEService64.exe – usually they are located in C:\Program Files (x86)\Common Files\BattlEye folder.
Please also make sure that BattlEye is able to run with administrator rights. Usually this should happen by default. To make sure that BattlEye has administrator rights, please right-click on the BE Launcher executable, choose “Properties”, go to the “Compatibility” tab, check the “Run this program as an administrator” option and click OK to apply your changes.
Open CMD as Admin and run
Reboot your PC
If that doesn’t work, make sure all BattleEye processes are stopped, then delete all of the files from the Battleye folder listed above and restart your PC. After that startup Conan and it will re-install.
As always, you should fully exclude your games from all security software on your system. If you don’t think you have any installed, you probably have Windows Defender. (I personally install all my games into one “Games” folder, and keep everything in that folder excluded.)