Third Party Application Error

Every time since the Halloween update I haven’t been able to play ow because I press play and it brings up a black screen and makes the error sound. To stop this I have to alt + tab and then try and close this tab for like 5 mins before it actually closes and there is also a little error box saying a third party application is preventing ow from opening. I’ve tried uninstalling stuff that may occur this and none of this helped and I’m still not been able to play the game since.

Related to this? Unauthorized Third-party Software