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PunkBuster is an anti-cheat program that is installed in some computer games. It contains two processes, PnkBstrA.exe and PnkBstrB.exe, that run in the background on your computer. PunkBuster monitors your system for signs of fraud in online games. Regardless, PunkBuster can sometimes backfire on you and cause all kinds of problems, even for users who don't use cheats. Basically you get the "Kicked by PunkBuster" message with no explanation.

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ERROR MESSAGE:

Game offline: PunkBuster kicked you out. Reason indicated: PunkBuster expelled player 'Erundo' (for 0 minutes)… RESTRICTION: Service communication failure: PnkBstrA.exe

PunkBuster, developed by Even Balance, Inc. has a long history. It was founded in 2000 and was first integrated in the return to Castle Wolfenstein in 2001. It is currently available for Mac and Linux, as well as Windows, so even Mac or Linux gamers can see that PunkBuster works in the background. PunkBuster installs automatically when you install a game that uses it.

What causes the BF4 error kicked by the PunkBuster in Windows?

There are not many different causes for this particular problem, but those confirmed by other actors can be solved with relatively simple methods.

  • PunkBuster not working: reinstalling and updating PunkBuster is the recommended answer to this problem. Program malfunction is one of the most frequent causes and many users have benefited from uninstalling the current version and installing the latest version.
  • The PunkBuster service is not working properly - The PunkBuster service should be running constantly and should be reopened as soon as it is closed. This can be set in the properties of the service and you can easily fix the problem.
  • Firewall de Windows Defender: el firewall de Windows Defender puede bloquear el programa y le sugerimos que haga una excepción para el ejecutable.

Check if your virus protection blocks Punkbuster.

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Make sure your virus protection doesn't block Punkbuster, also check Windows firewall.

Punkbuster has 2 background services to check if your computer is being hacked or if third party programs are affecting the game.

They are called:
PnkbstraA

To make both possible, do the following:

  1. Press the Windows and R keys simultaneously.
  2. Enter "Services.msc".
  3. Find PnkBstraA in the list
  4. Check both and select "Start Service" on the left side.
  5. If it is already running, restart it.

Update Punk Buster

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  1. Ve a la página de Punk Buster: http://www.punkbuster.com/index.php?page=pbsetup.php
  2. Download PB and extract the files to your desktop.
  3. Open the Punk Buster folder.
  4. Click on PB settings and it opens.
  5. Add your BF4 game to Punk Buster, which is on top of Punk Buster.
  6. Then upgrade the Punk Buster by climbing to the top of Punk Buster.

https://answers.ea.com/t5/Battlefield-4/2017-and-we-still-have-the-Punkbuster-kicking-issue/td-p/5952954

RECOMMENDED: Click here to fix Windows errors and get the most out of your system performance