You need to do exactly what it says in the screenshot, you've got software on the PC "Ace-Base" that's triggering EAC, and EAC is not allowing the boot of the game because of it. Check what software is running in the background via Task Manager etc.
Tldr: This is an archived version of the DBD forum, it has all posts, comments and media. The archived data will be published at the end of October. This site is not in any way affiliated with or endorsed by Behaviour Interactive.
Comments
You need to do exactly what it says in the screenshot, you've got software on the PC "Ace-Base" that's triggering EAC, and EAC is not allowing the boot of the game because of it. Check what software is running in the background via Task Manager etc.