Error Code BLZBNTBGS00003F8 MW2 [FIXED]

You can fix Modern Warfare 2 error code BLZBNTBGS00003F8 by changing your firewall settings, updating the game, verifying game files or by changing the DNS server

Players frequently experience connectivity problems in MW2 while attempting to access online services or multiplayer modes, and one such problem is the error code blzbntbgs00003f8 mw2. It means the connection between your gaming system and the game servers could not be established reliably. This error can be frustrating as it prevents you from thoroughly enjoying the online aspects of Modern Warfare 2. Fortunately, our error guide will help you find the perfect solutions to avoid this error.

The error BLZBNTBGS00003F8 in MW2 says, “The connection to the Blizzard game server has been lost. Please exit and try again.
Error code BLZBNTBGS00003F8 mw2
Error code BLZBNTBGS00003F8 mw2 (Image by eXputer)
Key Takeaways
  • Error code blzbntbgs00003f8 mw2 indicates a connection problem between your system and the game servers.

Here are some things you can try to diagnose and fix error code blzbntbgs00003f8:

    1. Check the server status to ensure it is not undergoing maintenance or experiencing outages.
    2. Restart your gaming system to resolve temporary glitches or conflicts.
    3. Keep your MW2 game updated to the latest version to benefit from bug fixes and improved stability.
    4. Disable background applications that may interfere with the game’s connection.
    5. Reset your network devices, such as the modem and router, to resolve connection-related issues.
    6. Check and adjust firewall and antivirus settings to allow MW2 to communicate with the game servers.
    7. Consider port forwarding to establish a stable connection by forwarding specific ports for MW2.
    8. Verify the integrity of game files on PC platforms to repair any corrupted or missing files.
    9. Contact the game’s official support team for further assistance if the issue persists.

What Is Error Code BLZBNTBGS00003F8 MW2?

Players frequently experience connectivity problems in MW2 while attempting to access online services or multiplayer modes, and one such problem is the error number BLZBNTBGS00003F8. It means the connection between your gaming system and the game servers could not be established reliably. 

Network connectivity issues, server maintenance/outages, background applications firewall settings, outdated game versions, corrupted game files, and improper network configurations can cause the BLZBNTBGS00003F8 error in MW2. Considering these potential reasons, you may efficiently troubleshoot and deal with the situation.

Check Firewall And Antivirus Settings

It is vital to check your firewall and antivirus settings if you see the BLZBNTBGS00003F8 problem in MW2 because these settings frequently prevent the game from connecting to the servers. Although firewalls and antivirus software are intended to safeguard your computer, they occasionally tend to interfere with the network connections needed for MW2.

Try the following methods to achieve your goal:

  • Temporarily turn off your firewall. To temporarily turn off your firewall software, access the settings. Start MW2 and see if the error still occurs. Add MW2 as a trusted application or make an exemption in your firewall settings to grant it unfettered access.
  • Add MW2 as an exception in your antivirus software: Antivirus software frequently has tools that prevent some applications from connecting to the internet. To add MW2 as an exception or trusted application, access the settings of your antivirus program. This will ensure the antivirus program does not interfere with the game’s server connection.
  • Re-enable your firewall and antivirus: Remember to re-enable your firewall and antivirus software after making the necessary adjustments to keep your machine secure.
Check Firewall and Antivirus Settings
Check Firewall and Antivirus Settings (Image By Exputer)

You can eliminate any conflicts and enable MW2 to establish a reliable connection with the game servers, fixing the BLZBNTBGS00003F8 error by checking and modifying your firewall and antivirus settings. 

Update The Game

When dealing with the BLZBNTBGS00003F8 bug in MW2, updating the game is a crucial step in troubleshooting. Game developers frequently release patches and updates to address problems, boost stability, and improve the gameplay experience. Older game versions can occasionally cause connectivity problems and produce error messages.

Follow these general steps to fix your error:

  1. Steam (PC)
    • Launch the Steam client.
    • Go to your game library.
    • Locate Modern Warfare 2.
    • Steam will automatically begin the update process if available.
    • Allow the update to complete. 
    • Launch MW2 and check if the error code persists.
  1. Console Platforms (PlayStation, Xbox)
    • Navigate to the MW2 game icon on your console’s home screen.
    • Access the game options by using the options button (PS) or the menu button (Xbox).
    • Select “Check for Updates.” 
    • Download and install any available updates.
    • Launch MW2 and see if the error persists. 

It’s critical to ensure your gaming platform is online while the update is installed. To ensure you have the most recent version of the game, download and install any available updates in order if there are multiple ones.

The BLZBNTBGS00003F8 error may be caused by known issues, flaws, and compatibility concerns that can be fixed by updating MW2. Maintaining game updates improves performance and raises the possibility that the problem code will be corrected.

Reset Network Drivers

Resetting your network equipment can frequently fix connectivity issues and assist with MW2’s BLZBNTBGS00003F8 error troubleshooting. You can update the settings on your modem and router and create a new connection to the game servers by rebooting them. To reset your network devices, follow these steps:

  1. Power off your modem and router.
  2. Locate the power cables of your modem and router and unplug them from the power source. 
  3. Wait for 30 seconds to fully power down and clear any residual power.
  4. Reconnect the power cables.
  5. Plug the power cables back into the modem and router and wait for them to boot fully.
  6. Reconnect your gaming system.
  7. Reconnect your gaming system to the network.
  8. Launch MW2 and check for the error. 
  9. Start MW2 and see if the BLZBNTBGS00003F8 error persists.
Reset Network Drivers
Reset Network Drivers (Image By Exputer)

You can fix any temporary network problems or malfunctions that may have contributed to the error code by rebooting your modem and router. This procedure increases the probability of selecting the BLZBNTBGS00003F8 error in MW2 to establish a new connection and check that your network devices are correctly coordinated with the game servers. 

Port Forwarding

By establishing a direct and dependable connection between your machine and the game servers, port forwarding is a method that can assist in fixing the BLZBNTBGS00003F8 error in MW2. Follow the steps below to do so:

  1. Determine the ports used by MW2; the required ports are typically specific to MW2 and may include both TCP and UDP protocols.
  2.  Open a web browser and type your router’s IP address into the address bar. This IP address is typically listed in the router’s manual or can be discovered using the commands “ipconfig” or “ifconfig” in the terminal on a Mac or Linux computer.
  3. To access the configuration page, provide the login and password for the router. 
  4. Locate the port forwarding settings by looking for a section like “Port Forwarding,” “Virtual Servers,” or “Applications & Gaming.”
  5. Create a new port forwarding rule for MW2 in the port forwarding settings.
  6. Give the rule a name and input the necessary ports (both TCP and UDP).
  7. Specify the IP address of your gaming system.
  8. Save and apply the changes.
  9. Your router will then start forwarding the specified ports to your gaming system.
  10. Launch MW2 and check if the BLZBNTBGS00003F8 error persists. 

The communication between your system and the game servers optimizes by properly configuring port forwarding for MW2, which lowers the possibility of running into this specific error.

Verify Game Files (PC)

For PC users experiencing the BLZBNTBGS00003F8 error in MW2, checking the game files is critical in debugging. This procedure verifies the game files’ integrity and ensures they are not corrupted or missing, which could cause connectivity problems. Follow the steps given below:

  1. Launch the game platform, such as Steam or
  2. Navigate to your game library.
  3. Locate Modern Warfare 2.
  4. Select “Properties” or “Settings” 
  5. Click on the “Local Files” or “Local Content.”  
  6. Click on the option that says “Verify Integrity of Game Files.” 
  7. Initiate the verification process. 
  8. Wait for the process to complete.
  9. Launch MW2 and see if the error persists.

By checking the game’s files, you may find and fix any corrupted or missing files causing the BLZBNTBGS00003F8 error. This procedure can improve the game’s performance and stability and return it to a healthy state.

Check Server Status

Blizzard may have announced any server issues or downtime on their Twitter feed. Even though it’s doubtful that this is the cause of your problem, it’s still worth looking into. If the business reports server issues, your only option is to wait until they are fixed and access is once again permitted. You can check Blizzard’s server status from websites like Downdetector

Check Server Status
Check Server Status (Image By Exptuer)

Restore Network Driver

Only the Killer E2200 networking drivers for Windows 10 are compatible with this method. Reverting or updating network drivers in Device Manager reportedly fixes the issue code, according to users of this driver.

  1. Press Windows Key + R to “Run.” 
  2. Type devmgmt.msc.
  3. Select UAC (User Account Control).
  4. Go to Device Manager.
  5. Select Network Adapters.
  6. Locate the Killer E2200 driver.
  7. Select properties for the menu.
  8. Click on Driver.
  9. Click on Rollback Driver.
  10. Ensure the restore process.
  11. Restart the computer.
  12. Check to see if the error persists.
Restore Network Driver (Image by exputer)
Restore Network Driver (Image by eXputer)

Changing The DNS server

The Network and Internet menu’s option to change the default DNS server is another widely used solution for the BLZBNTBGS000003F8 problem. It has been verified that this workaround works on every recent Windows version.

When they changed the Preferred DNS Server to and the Alternate DNS Server to, many affected users who were having trouble playing on ASIA servers confirmed that the problem was fixed.

  1. Open a Run dialogue box by pressing the Windows key + R.
  2.  Type ‘control.exe.’ 
  3. Press Enter to open the Control Panel.
  4. Click on Network and Internet.
  5. Click on Network and Sharing Center.
  6. Click on the Change Adapter settings.
  7. Choose Properties from the Network Connections menu.
  8. Go to the Networking tab.
  9. Click on the Internet Protocol Version 4 (TCP / IPv4).
  10. Enable the box associated with Use the following DNS server address toggle.
  11. Set as the Preferred DNS Server.
  12. Set as the Alternate DNS Server.
  13. Save the changes.
  14. Restart your computer.
  15. Relaunch the game to see if the error persists.
Changing DNS Server (Image by Exputer)AC
Changing DNS Server (Image by Exputer)

Try contacting the official support team for further assistance and help if something else is needed. Their team of experts will always be there to help you around the clock.


What does the error code BLZBNTBGS00003F8 mean in MW2?

The error code BLZBNTBGS00003F8 is specific to MW2 and usually indicates a connectivity issue with the game’s servers

Can my internet connection or network configuration cause the BLZBNTBGS00003F8 error?

An unstable internet connection, network issues, or certain router/firewall settings can contribute to the error.

Check out other Modern Warfare 2 guides on eXputer: 

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Haider Khan

Haider Khan is our resident error guides writer who loves to tinker around with operating systems and game files to find practical solutions to video game issues. He then crafts easy-to-follow error fix guides based on his findings for his audience on eXputer. With years of experience writing for games, his knowledge about error fixes and research on errors is reflected in his guides. He’s also a Battlefield veteran who likes to rack up some Ws in his spare time. Experience: 3+ Years || Education: Bachelor's in Journalism || Successfully Troubleshot Over 200 Games || Mainly Covers Error Fix & Game Settings 

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