Fix BLZBNTBNA00000012 Error Warzone Not Launching or Running From Battle.net Client

When you try to launch Call of Duty: Warzone, but the game is not open or runs from the battle.net client. Generally, the error message when Warzone is not launching or running  from battle.net client will say ‘An error has occurred while launching the game. Please check for updates or scan and repair to fix this issue’ – ‘More Help: BLZBNTBNA00000012’.

The cause of this issue is commonly caused by bugs occurring in the Battle.net client. Some players think that this issue occurs, since the Call of Duty: Vanguard works. If something wrong occurs on battle.net, you totally cannot launch the game of Call of Duty: Warzone. Then, how to fix this issue?

Fix BLZBNTBNA00000012 Error Warzone Not Launching or Running From Battle.net Client

Fixing BLZBNTBNA00000012 Error When Warzone Not Launching, Here’s How!

According to some sources, the error code BLZBNTBNA00000012 is commonly caused by any bugs at battle.net client. Many players on the Blizzard forum have discussed this issue, and they also think that the issue is caused by the battle.net client server.

The only one way to fix the error code BLZBNTBNA00000012 when Warzone is not launching or running from battle.net is to visit battle.net that you can access here. Here’s what you can do at battle.net:

    • After clicking the link to visit battle.net, make sure to login with your account.
    • Once you logged in, you may need to ignore the file that is updating.
    • In this way, you may need to click on the ‘Gear Icon’ next to ‘Settings’.
    • Then, you need to select ‘Show in Explorer’.
    • By clicking the option, it will bring a file explorer window.
    • After that, you can search for Call of Duty: Modern Warfare’.
    • Once you find the modernwarfare.exe, you just simply click on it.
    • After clicking the file, it can launch the Warzone easily and bring the game up for you without any error.

That’s it! Fixing the error code BLZBNTBNA00000012 when Warzone is not launching or running from battle.net is pretty easy, isn’t it?  However, if it cannot solve your problem, you can try the method twice.

A player on Blizzard forum also shared with others about the solutions that you can take to fix this issue. Here’s a list of solutions to fix the error code BLZBNTBNA00000012 what the person share with:

    • Uninstalling the game
    • Uninstall battle net launcher
    • Check  if you had any computer updates
    • Restart your  computer
    • Check if you had any updates again before reinstalling battle net launcher
    • Make sure to run Battlenet as Administrator
    • Reinstall Call of Duty click play got the Error still
    • Try to work around everyone’s reposting, well it works for a couple seconds then it shuts down your game

Other Solutions to Fix Error Code BLZBNTBNA00000012

If the way that we got from Blizzard forum and some YouTube videos cannot solve your problem, you can also try to fix the issue by performing some following solutions below. Hopefully, these solutions will actually fix your error code BLZBNTBNA00000012 issue.  Here are they:

  1. Try to run as administrator

In fact, Call of Duty: Warzone will need admin privileges to run it appropriately. To run it as administrator, you can perform some steps below!

    • First, right-click the battle.net icon on your desktop.
    • Then, click ‘Run as administrator’.
    • After that, you can log into your account and launch the game.

If this way cannot solve your problem, you can try the next solution below.

  1. Verify the integrity of your  game files

If your game has a missing and corrupted file, it will cause the error code BLZBNTBNA00000012. To solve this issue, you can try to verify your game file and check if that fixes the issue.

To verify your game files on PC, you can do some steps as follow:

    • First, you need to access the Blizzard battle.net app.
    • After that,  click on the ‘Warzone’ icon.
    • Make sure to select the gear icon and click the ‘Scan and Repair’ button.

In the way of verifying your game files, you may have to wait as the game files are scanned and verified. You then need to reinstall your game if you receive a message informing you about any missing or corrupted game files.

  1. Allow battle.net through your firewall

Another solution you can do is to allow battle.net through your firewall. Keep in mind, Call of Duty: Warzone will not run if the battle.net app cannot get through your firewall. If your PC uses Windows Defender’s Firewall, you can try to check if battle.net is allowed through:

    • First, you may need to type ‘Firewall’ and then click the ‘Firewall & network protection’ in the search bar next to the Start button.
    • Then, choose the ‘Allow an app through firewall’ option.
    • Here, you will see a list of allowed apps and features. You may need to scroll down to see if the battle.net app is on this list. If you do not find it, the battle.net may not have permission through your firewall.

If the battle.net does not have permission through your firewall, you should give it permission.

Learn about the Minimum Specification of Your Device to Play Warzone

If you often encounter any issues on Call of Duty: Warzone either any error messages or not being able to launch the game, it’s highly recommended for you to learn about the minimum specification of your device to play Call of Duty: Warzone.

Here’s a list of minimum requirements to play Call of Duty: Warzone:

    • OS: Windows 7 64-Bit (SP1) or Windows 10 64-Bit
    • CPU: Intel Core i3-4340 or AMD FX-6300
    • RAM: 8GB RAM
    • HDD: 175 GB HD space
    • Video: NVIDIA GeForce GTX 670 / GeForce GTX 1650 or Radeon HD 7950
    • DirectX: Requires DirectX 12 compatible system
    • Network: Broadband Internet connection
    • Sound Card: DirectX Compatible

If you want to experience playing a game smoother, you can check the recommended specifications of your device below!

    • OS: Windows 10 64 Bit (latest Service Pack)
    • CPU: Intel Core i5-2500K or AMD Ryzen R5 1600X processor
    • RAM: 12GB RAM
    • HDD: 175 GB HD space
    • Video: NVIDIA GeForce GTX 970 / GTX 1660 or Radeon R9 390 / AMD RX 580
    • DirectX; Requires DirectX 12 compatible system
    • Network: Broadband Internet connection
    • Sound Card: DirectX Compatible

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