Call of Duty Warzone is a popular free-to-play battle royale video game loved by millions of users. However, a lot of users have experienced the error while trying to launch the game via the Battle.net client. When triggered, here is the full error message that flashes on your screen:

Fix COD Error BLZBNTBNA00000012

The error is accompanied by the error code BLZBNTBNA00000012. Now, this error can be frustrating as you are unable to play your favorite game. If you are one of the affected users facing the same error, this guide is for you. In this post, we are going to mention several working fixes that will enable you to resolve the error. Before we get to the solutions, let us try to understand the scenarios that might trigger the error.

What causes An error has occurred while launching the game error in Call of Duty Warzone Pacific?

Here are the possible methods to fix the An error has occurred while launching the game error in Call of Duty Warzone Pacific:

This error can be a result of a lack of administrator rights. If the scenario applies, try launching the game with administrator privilege.It can also be caused due to corrupted or damaged game file of Warzone. Hence, you can try verifying the integrity of game files to fix the error.If you are using some custom launch options like the command-line argument, it can cause the error in hand. So, you can remove any such argument and custom launch options to fix the error.It can also be caused due to corrupted cache file associated with the Battle.net client. Hence, try clearing the cache files for Battle.net and see if the error is fixed or not.

Based on the above scenarios, you can apply a suitable fix to resolve the error.

An error has occurred while launching the game – Call of Duty Warzone Pacific

Here are the methods to fix the An error has occurred while launching the game error in Call of Duty Warzone on Windows 11/10 PC: Let us discuss the above solutions in detail now!

1] Run the game as an administrator

The first thing you should do when your encounter this error is run the Warzone game with administrator privilege. This error can be very well facilitated due to the lack of administrator rights to launch the game. There are instances when a game fails to launch due to strict User Account Control (UAC) being implemented on your system. So, in that case, you should be able to fix the error by running the game as an administrator. To run the game as an administrator, here are the steps to follow: In case this method doesn’t help you resolve the error, you can move on to the next potential fix to get rid of the error. Read: Fix Call of Duty Warzone Freezing or Crashing on Windows PC.

2] Scan and Repair the game

As mentioned in the error message, you can try scanning and repairing the game files to fix the error. This error can be triggered if there are corrupted game files for Warzone. So, verifying the integrity of game files of Warzone using the Scan and Repair option should help you get rid of the error. You can follow the below steps to repair the game files:

3] Update the game

The next method that you can try to counter the error is to update the game. You might be encountering the error due to some bug in the game. Fortunately, the developers keep coming with new game updates and patches which improve game performance and address bug fixes. So, make sure your game is updated. If your game is updated and you still get this error, go ahead and try the next fix to resolve the error. See: COD Warzone Lagging or having FPS Drops.

4] Change Game Region

You can also try changing the game region and then see if the error is resolved or not. Many affected users have reported that changing the game region helped them get rid of this error. So, it might just work for you as well. Here are the steps to change the game region: If you are able to fix the error using this workaround, well and good. But, in case this method doesn’t give you any luck in fixing the error, try the next potential fix.

5] Remove Launch Options

This error can also be triggered due to some customized launch options that you have provided to the game. Hence, if the scenario is applicable, you can try removing the launch options and then check whether or not the error is resolved. Here is how to do that: In case you still receive the error, move on to the next error to fix the error. Read: Fix Modern Warfare Warzone’s High CPU Usage on PC.

6] Delete Cache Files

If the error still persists, you can try deleting the cache associated with the Battle.net client. This error can be a result of the corrupted or damaged cache files that store basic information. In that case, you delete cache files to resolve the error. Here are the steps to do that:

7] Change Game Folder

In case none of the above solutions work for you, try changing the game installation directory. It is a kind of workaround that helped some users and might just work for you as well. So, try changing the installation folder of the Warzone game and then see if the problem is fixed or not.

8] Update your graphics card driver

If you’re running an outdated graphics card on your PC, or one that’s corrupted, it is best to check for an update. On Windows 11, you can look for driver updates from the Settings panel. Just visit Windows Update > Optional Updates > Driver updates.

9] Allow Battle.net to run through the Firewall

In order to run Call of Duty properly, you have to permit the Battle.net client on your PC to run through the Firewall. Here’s how you can check if Battle.net can go through your Windows Firewall:

In the search menu of your taskbar, search and open Firewall & Network ProtectionHere, click on Allow an app through the firewallYou’ll then be presented with a list of apps that have permission to bypass the FirewallIf Battle.net is not there, click on Change Settings from the Allowed Apps pageThen, click on Allow another app > Browse > select the executable file of Battle.net from the File Explorer promptAdd it, tick mark the Private setting, and save this change by clicking on Ok

Read: Fix Memory Error 13-71 in Call of Duty Modern Warfare.

How do you fix Call of Duty fatal error?

To fix fatal errors on Call of Duty, make sure you have up-to-date graphics drivers, verify the game files, or delete the Battle.net cache folder. Besides that, you can also try running your VRAM under max, restarting your router, or using DirectX 11. Read: Fix Dev Error 6456 in Call of Duty Modern Warfare.

How do you fix error codes on Modern Warfare?

Depending upon the error code you are receiving on Modern Warfare, you can apply suitable fixes. Here are some guides that will help you fix different error codes on Modern warfare: Read: Fix COD Modern Warfare DEV ERROR 6068, 6606, 6065, 6165, 6071. Hope this helps!

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