I have been getting the 'Security violation' error on Battlefield 1 for days and I can't play. I've tried every solution, researched forum pages, but couldn't find a fix. There are no cheats, no viru...
From that message it seems that the anti-cheat doesn't like something that's running. It could be worth checking what else is running on your PC as you might be able to find the culprit that way.