Fix World of Warcraft: A Streaming error has occurred

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World of Warcraft is an MMO role-playing video game that’s developed by Blizzard Entertainment and released in 2004. The game is available for Microsoft Windows and Macintosh OS platforms. Now, plenty of Windows users are reporting that the World of Warcraft: A Streaming error has occurred issue is appearing while launching the game. If you’re also facing the same issue, then check out the troubleshooting guide below.

To be precise, the WoW PC players are encountering an error message with an error code like “A streaming error has occurred. Error Code: WOW51900322.” This error message simply indicates that the World of Warcraft game servers has some issues with streaming the data. Luckily, we have a couple of possible solutions that you should try for once. Alternatively, you can visit BlizzardCS Twitter and Realm Status page for additional support or info.

Fix World of Warcraft: A Streaming error has occurred

Fix World of Warcraft: A Streaming error has occurred

Now, without further ado, let’s get into the steps below.

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1. Reset WoW User Interface

  • Exit the World of Warcraft.
  • Head over to the Task Manager and close the background running process of WoW (if any).
  • Launch the Blizzard Battle.net client > Click on Options > Select ‘Show in Explorer’ for Windows or ‘Reveal in Finder’ for Mac.
  • Open the World of Warcraft folder.
  • Launch the game folder either retail or the classic one.
  • You will need to rename the Cache, Interface, and WTF folders to CacheOld, InterfaceOld, and WTFOld respectively.
  • Once done, launch the World of Warcraft again in order to take effect.

2. Update Windows OS

  • Click on Start > Go to Settings (cog icon).
  • Click on Update & Security > Click on Check for updates.
  • If any update is available, just download and install it.
  • Some times, there can be multiple cumulative Windows updates available. So, download and install all the pending updates one by one.
  • Once done, restart your computer and try running the game again.

3. Update GPU Driver

  • Click on Start > Type Device Manager.
  • Click on the Device Manager from the search result.
  • Next, click on the Display adapters arrow icon.
  • Right-click on the graphics card.
  • Select Update driver > Click on Search automatically for updated driver software.
  • If available, it will automatically download and install the latest driver.
  • Once done, reboot your computer.

4. Power Cycle Network Devices

  • Shut down the computer and the modem/router as well.
  • Unplug the power cable from the router and wall socket.
  • Wait for around 1 minute and then plug back in the power cable.
  • Turn on the modem or router.
  • Once it turns on and gets stable with LED indicators, boot your PC and try running the game again.

5. Disable Windows Defender or Anti-Virus

Make sure to turn off the Windows Defender or any other third-party antivirus program on your PC that can cause issues with the game launching or allowing server access. We will also recommend you to allow the game exe file to Windows Firewall protection as an exception to give access to the game files.

6. Uninstall and Reinstall the Game

For Windows:

  • Launch the Blizzard Battle.net client > Click on game icon > Select Uninstall Game.
  • Choose Install from the game tab again to reinstall it.

For Mac:

  • Launch the Blizzard Battle.net client > Select the game icon > Select Uninstall Game.
  • Choose Install from the game tab again and reinstall it.

That’s it, guys. We hope you’ve found this troubleshooting guide pretty useful. For any queries, feel free to ask in the comment section below.

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