Continuing the discussion from Crash game - Fatal error - server PVP official:
From the command line prompt:
Type “cmd” and when the options appear select “Run as administrator”:
Copy and Paste this string quotes and all into the window:
"X:\SteamLibrary\steamapps\common\Conan Exiles\ConanSandbox\Binaries\Win64\ConanSandbox_BE.exe" -nosplash -BattlEye %command%
Then just press RETURN watch the magic happen.
Exit and reload the game which will patch and validate!