Solution: "The BattlEye Service isn't running properly"

For the error: The BattlEye Service isn’t running properly: please restart your client

Solution taken from BattlEye FAQ:

“This is happening because you permanently declined BE installation by clicking “Do not ask me again.” in the BE Launcher window previously.”

Simply go to this folder (default location):

C:\SteamLibrary\steamapps\common\Conan Exiles\ConanSandbox\Binaries\Win64\BattlEye

Then run “Install_BattlEye.bat”.