Since its launch, the game, Call of Duty: Black Ops Cold War has seen a ton of issues. And it’s not ending. Recently, players are complaining about getting the error code BLZBNTBGS000003F8 during the gameplay and it makes the game unplayable. In this post, we’ll dive into troubleshooting it and hopefully help you get rid of this error code.

Try these fixes

  1. Allow your game through firewall
  2. Flush your DNS cache
  3. Switch to Google DNS
  4. Switch to wired connection
  5. Update your network adapter driver
  6. Delete the Battle.net cache folder
  7. Link your Activision and Blizzard accounts
  8. Terminate programs running in the background
  9. Reset network settings

Fix 1: Allow your game through firewall

The Windows Firewall is designed to help keep unauthorized users from accessing files and resources on your computer. But there are circumstances that it fails to trust your applications and thus won’t give them access to the internet. In this case, you need to turn off Windows Defender Firewall:

1) Press the Windows logo key to open the Start menu. Type windows firewall. Then click Windows Defender Firewall from the results.

turn off Windows Defender Firewall

2) On the left side of the screen, select Allow an app through Windows Defender Firewall.

allow call of duty black ops cold war through windows defender firewall

3) Now you need to scroll down until you can find Call of Duty: Black Ops Cold War. And also make sure it’s ticked for Private and Public.

allow Call of Duty Black Ops Cold War through Windows Firewall

If your game isn’t on the list, it means it doesn’t have access to the internet. If that’s your case, take these steps:

1) Click on Change settings > Allow another app….

allow black ops cold war through windows firewall

Then browse for our game and follow the instructions to allow your game through the firewall. If you are not sure where your game is installed, take these steps:

  • Open BLIZZARD.
  • Click on GAMES and head to Call of Duty: BOCW. Click on Options > Show in Explorer. Then you’ll be brought to your game’s installation directory.

    call of duty black ops cold war installation directory

    Open the folder Call of Duty Black Ops Cold War. Then you’ll find BlackOpsColdWar.exe.

    Once done, try and launch your game to check if you still get the error message. If the issue persists, proceed to the next fix.

Fix 2: Flush your DNS cache

Your computer’s DNS cache stores the information of sites you’ve visited before to speed up your internet experience. But there’s a possibility that something goes wrong with the cache. As one quick fix to check if the internet is working, clearing the DNS cache on a regular basis can remove all the entries and deletes any invalid records. Here’s how you can do this:

1) Press the Windows logo key to open the Start menu. Type cmd. Right-click Command Prompt from the results and select Run as administrator.

run command prompt as administrator

2) In the Command Prompt window that appears, type the following command and then press Enter.

ipconfig /flushdns

If successful, the Command Prompt will report back with “Successfully flushed the DNS Resolver Cache.”

flush DNS blzbntbgs000003f8 call of duty black ops cold war

Once done, restart your computer and launch your game to check if it works.


Fix 3: Switch to Google DNS

Sometimes your ISP-supplied DNS server might be slow or not properly configured for caching, which can slow your connection. To fix it, you need to change your DNS server. The recommended one is Google DNS, which provides more reliability and increased performance and faster query. Follow the steps below to switch to Google DNS:

1) On your keyboard, press the Windows logo key and R at the same time to open the Run dialog box.

2) Type control and then press Enter on your keyboard to open the Control Panel.

open control panel

3) Click Network and Internet. (Note: make sure you view the Control Panel by Category.)

switch to Google DNS call of duty black ops cold war error code blzbntbgs000003f8

4) Click Network and Sharing Center.

switch to Google DNS

5) Click on your Connections, whether it’s Ethernet, Wi-Fi, or others.

how to switch to Google DNS

6) Click Properties.

switch to google dns change dns server to fix connection issues

7) Double-click Internet Protocol Version 4 (TCP /IPv4).

change DNS server

8) Enable the box associated with Use the following DNS server address: toggle. Then set 8.8.8.8 as the Preferred DNS Server and 8.8.4.4 as the Alternate DNS server.

Google DNS server addresses

Once done, simply click OK to save the changes, then restart your computer to allow these new changes to be implemented.


Fix 4: Switch to wired connection

If you’re using Wi-Fi or wireless connection on your PC, it’s time for you to see if a wired connection will help you get rid of the error code. To do that, use a LAN cable to connect your device to the router and restart the game to check if it resolves your issue.

If you’re already using a wired connection, try to restart your devices and you may need to invest in a brand new cable. And when you’re playing the game, do not use any other device connected to the same network. Also, terminate bandwidth intensive tasks such as YouTube and other video streaming services.


Fix 5: Update your network adapter driver

The error occurs due to a problem with the connection. Your outdated network adapter driver can be the culprit and make your game unplayable. To fix it, you’re supposed to update your network adapter driver, especially if you can’t remember when was the last time you updated it.

You can manually update your network adapter driver by going to the manufacturer’s official website to download and install the correct network driver for your system.

OR

You can do it automatically with Driver Easy. It will automatically recognize your system and find the correct driver for it. You don’t need to know exactly what system your computer is running or risk downloading and installing the wrong driver.

Here’s how it works:

1) Download and install Driver Easy.

2) Run Driver Easy and click the Scan Now button. Driver Easy will then scan your computer and detect any problem drivers.

update network adapter driver automatically with Driver Easy

3) Click the Update button next to your outdated network adapter driver to automatically download the correct version, then you can manually install it (you can do this with the FREE version).

Or click Update All to automatically download and install the correct version of all the drivers that are missing or out of date on your system. (This requires the Pro version which comes with full support and a 30-day money-back guarantee. You’ll be prompted to upgrade when you click Update All.)

update network adapter driver automatically with Driver Easy
The Pro version of Driver Easy comes with full technical support. If you need assistance, please contact Driver Easy’s support team at support@drivereasy.com.

After updating your drivers, restart your computer and launch your game to check if the problem is resolved.


Fix 6: Delete the Battle.net cache folder

A corrupted cache folder can cause connectivity issues with the game Call of Duty: Black Ops Cold War. Deleting the Battle.net cache folder will not affect your game data and may resolve issues caused by outdated files.

1) Close open Blizzard programs.

2) Press Ctrl+Shift+Esc to open the Task Manager.

3) Click the Processes tab. If agent.exe is running or Blizzard Update Agent in Windows 10, right-click it and select End task.

4) Navigate to the folder containing the cache directory:

  • On your keyboard, press the Windows logo key and R at the same time to open the Run dialog box. Type %ProgramData% into the Run field and press Enter.

    delete the Battle.net cache folder
  • Simply delete the cache directory located at %ProgramData%\Blizzard Entertainment\Battle.net\” and it should fix the issue.

Fix 7: Link your Activision and Blizzard accounts

If you haven’t linked your Activision and Blizzard accounts, you may be more likely to receive the error code. So to eradicate it, follow the steps below to link your accounts:

1) Head across to activision.com.

2) In the top right, click LOGIN.

link activision account

Then you’ll be redirected to the login page. Now simply enter your details.

2) Once you’re logged in, click PROFILE in the top right.

activision profile

3) If you haven’t linked with Battle.net Account, simply click on it and follow the on-screen instructions to link your account.

link with battle.net account

After you’ve done these, you should be able to play your game.


Fix 8: Terminate programs running in the background

Ideally, we suggest you close programs that may be using the internet. It’s also a great way to make sure that no third-party programs are interfering with your game. Here are the steps you can follow:

1) On your keyboard, press the Windows logo key and R at the same time to open the Run dialog box.

2) Type msconfig and press Enter.

3) Go to the Services tab. Check Hide all Microsoft services and click Disable all.

disable programs running in the background cold war error code blzbntbgs000003f8

4) Now go to the Startup tab and click Open Task Manager.

terminate programs running in the background cold war error code blzbntbgs000003f8

5) Under the Startup tab, disable one task at a time (Right-click on each and select Disable.) Once done, restart your computer.


Fix 9: Reset network settings

If your troubleshooting efforts have failed, you can try and reset your network. By resetting your network, Windows will forget your Ethernet network, along with all your Wi-Fi networks and passwords. This is a way to troubleshoot your connection and reset your network devices back to the default settings. Here’s how you can do this:

1) Press the Windows logo key to open the Start menu. Type network reset and then click Network reset from the results.

reset network settings cold war error code blzbntbgs000003f8

2) Click Reset now.

reset network settings cold war  error code blzbntbgs000003f8

When asked to confirm the network reset, click Yes.

confirm to reset network settings

It will then initiate the reset process and restart your computer.


So these are the possible solutions to the error code BLZBNTBGS000003F8 in Call of Duty: Black Ops Cold War. Hopefully, they help you get your game back to a playable state. If you have any ideas or questions, please leave us a comment below.

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Der Fehler BLZBNTBGS000003F8 ist ein häufiges Problem, das viele Spieler von Black Ops Cold War berichtet haben. Hier erfahren Sie 5 Tricks.