PunkBuster is cheat detection software—designed and maintained by Even Balance—that we used in some classic EA games.
PunkBuster is required for online play in:
PunkBuster is not owned or operated by EA. We can’t overturn any bans or suspensions issued by PunkBuster.
To appeal a PunkBuster ban or suspension, you need to contact Even Balance directly.
To understand why PunkBuster has banned you, check for the code you received in the lists below.
PunkBuster will ban or suspend you if it detects a cheat or hack on your computer. The violation code numbers for cheats and hacks range from 5000 to 139,000.
If you’ve received one of these codes, you can fix it by removing any cheat software or hacks from your computer.
PunkBuster will ban or suspend you with an Integrity Violation if it suspects you’ve altered the game environment through modified game files or modified PunkBuster files.
The code numbers for integrity violations range between 10000-29999.
To fix these, reinstall PunkBuster from the latest game update patch.
If you see either of these messages while playing:
Make sure that PunkBuster is running and fully updated.
If you keep seeing this error you may need to reinstall PunkBuster.
If you were kicked and didn’t see a message, follow the steps in this PunkBuster support article to find out how to see the kick reason in your logs.
PunkBuster is installed along with your game, but if you need to install it again, here’s how:
If you don’t have those folders:
Remember, if you uninstall PunkBuster, you won’t have multiplayer access in your game until you reinstall it.
PunkBuster has three components it needs to run properly.
If you get Losing Key Packets kicks, make sure that PnkBstrA.exe, PnkBstrB.exe, and PnkBstrK.sys are all on the exceptions list of your firewall/anti-virus software. This will stop you getting communication errors, and will help with PunkBuster updates.
Update the Steam launcher
We released an update through Steam to help with Battlefield 4 multiplayer access. If you haven’t restarted the Steam app in a while, you may not have gotten it yet.
To update it:
If you’re still seeing problems after that, try repairing Battlefield 4 through Steam.
Install Punkbuster manually
If you’ve tried the workaround above and are still not able to join multiplayer, try downloading Punkbuster and installing it manually.
Punkbuster is either out of date or not installed
To fix this, update or redownload and reinstall PunkBuster.
PunkBuster kicked player 'your name' (for 0 minutes) ... RESTRICTION: Service Communication Failure: PnkBstrA.exe
This one is usually fixed by reinstalling PunkBuster.
If you see a GAME HACK #89265 error and it’s blocking you from multiplayer
You might see this error if you’re running a program that Punkbuster misidentifies as cheat software. If you keep seeing this error, contact Punkbuster support to let them know about it. They should be able to help you fix the problem.
For help with PunkBuster errors and bans, contact PunkBuster support.
EA Advisors can’t help with or overturn PunkBuster bans.