BN-3048 Error Code in How to Fix [Explained]


Most fans playing Blizzard games use the client to launch games. Unfortunately, the launcher experiences several errors that get in the way of smooth gameplay. One such error is the BN-3048 error code in the client.

There’s not much information online regarding this error code, leaving fans to figure it out independently. Luckily, we’ve got you covered. We’ve created this troubleshooting guide to help you fix the issue.

What is error code BN 3048?

The error code BN 3048 is a network and connectivity error that occurs when players try to log in. The error has something to do with Blizzard team servers. For example, the servers may be experiencing downtimes, outages, or network congestion that affects how your PC connects to the games’ services.

Several big games available on Blizzard’s launcher experience this error, including:

  • Overwatch
  • Diablo III
  • Overwatch 2
  • Warzone 2
  • World of Warcraft
  • CoD: Black Ops

The error code BN 3048 prevents players from accessing the games available on the Blizzard platform. According to gamers, when they reach the starting screen, it says they don’t have an internet connection or the servers are unavailable.

How to fix the BN-3048 Error Code in

Since the BN-3048 error code in is a server-related error, we recommend performing the following pre-checks first:

If the servers are down, you have no other options other than wait for the servers to function.

Next, we recommend performing a preliminary check on your internet connection. If your connection is slow or sluggish, you’ll likely encounter error codes when playing games via the launcher. Here’s what to do:

👉Internet troubleshooting:

  • Check your internet connection to ensure it is stable, reliable, and fast.
  • Power cycle your router or modem to refresh the connection.
  • Switch from a Wi-Fi connection to a wired connection.

If you still encounter the BN-3048 error code in, try these fixes:

  1. Update network drivers
  2. Flush your DNS or renew your IP
  3. Disable VPN

1. Update network drivers

Time needed: 2 minutes

Updating your network drivers helps resolve any network-related issues affecting your internet connection. To do this:

  1. Open Device Manager

    Right-click the Windows start button and select Device Manager.

  2. Expand Network Adapters

    Double-click the Network Adapters category to expand the list of network drivers on your PC.

  3. Update driver

    Right-click the dedicated network driver and select Update driver.device manager network adapters network device update driver

  4. Choose the appropriate update method.

    Windows will ask you how to search for network drivers. Select Search automatically for drivers.Search automatically for drivers

  5. Complete process

    After completing the process, reboot your PC and check whether the error is fixed.

Alternatively, you can update your network drivers automatically via PC HelpSoft. This tool will search for missing and outdated drivers on your PC and download and install them for you. This saves you the time it takes to do so manually.

⇒ Get PC HelpSoft

2. Flush your DNS or renew your IP

👉To flush your DNS:

  1. Type cmd in the Windows search bar to open Command Prompt. On the left pane, select Run as administrator.
Command Prompt
  1. In the Command Prompt window, type ipconfig /flushdns and hit enter on your keyboard.
  1. Check whether the error is solved.

👉To renew your IP:

  1. Type cmd in the Windows search bar to open Command Prompt. On the left pane, select Run as administrator.
  2. In the Command Prompt window, type ipconfig /release and hit enter on your keyboard.
  3. Check whether the error is solved.

3. Disable VPN

VPNs are essential when gaming as they protect players from DDoS attacks while establishing a secure connection between your PC and Blizzard’s servers. However, VPNs may trigger the BN-3048 error code in So, we recommend disabling your VPN to see whether the error is solved.

If you're interested, here's Error BLZBNTBGS000003F8: What is & How To Fix


The BN-3048 Error code in has affected numerous Blizzard fanatics who want to play the large selection of games on the platform. We understand that the error occurs due to issues on Blizzard’s side, not yours. However, there are some steps you can take that may help solve the problem, such as updating your network drivers, flushing your DNS, renewing your IP, and disabling your VPN.

Let us know if any of these fixes help resolve the BN-3048 error code.

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