Back 4 Blood: How to Fix “anti-cheat violation” Bug

Online games are unavailable because your game has an anti-cheat violation.

Although they never used any cheats in the game!
Below a solution and a problem that can lead to that error are shown in high hopes it might help someone out.

THIS FIX WAS DONE ON WINDOWS 10!

The main problem:

Apparently Back 4 Blood can’t handle it if your computer’s main folders are changed, especially talking about the “Documents” folder when opening “This PC”. This can happen out of a few reasons, maybe you deleted it, or you changed its direction on purpose or some program changed that as the installation of for example “OneDrive” can do (as far as I’ve read).

To fix this issue proceed as follows:

Fixing the folders location:

Usually the following should work, no matter if you deleted your folder(s) or the direction is changed.

Simply restart your computer after the change was done and then enter “This PC” again. You will see that there are again shortcuts to those folders, when trying to open these a) an error message appears (deleted) or b) you are opening a folder in the wrong direction (proper direction: C:\Users\[your_username]). What you now should do is make a right click on the documents shortcut, then press properties, then path and at the bottom left you should see the option “Restore Default“. This should restore your default folder at the correct pathing and should therefor fix the issue.

For me only the documents folder was the problem. If it doesn’t work for you try to restore all the other folders as well and don’t forget to double check the pathing and eventually restart your game and/or your computer.

I hope this small guide helped someone out there out!

Related Links

Thanks to Tanicى𝒯ρ for his great guide, all credit to his effort. you can also read the original guide from Steam Community. enjoy the game.