When launching the game I get a “Failed to initialize BattlEye Service: Windows Test-Signing Mode not supported.” error.

Please disable test-signing mode by following this guide: http://support.microsoft.com/kb/2509241. Alternatively you can follow the manual instructions provided here: https://msdn.microsoft.com/en-us/library/windows/hardware/ff553484%28v=vs.85%29.aspx. If you are using hardware that requires driver signature enforcement to be disabled please check the vendor’s website for newer drivers. Unfortunately, due to our goal to provide the most effective protection possible BattlEye cannot support systems running in test-signing mode in any way.