Fix: Dev Error 6034 in Warzone/Modern Warfare [PC/Xbox One]

# 1. Restart the Game (PC/Xbox)

# 2. Clear the Cache (Xbox)

# 3. Clear the Reserved Space (Xbox)

# 4. Remove Add-ons and Data Packs of the Game (Xbox)

  • Call of Duty Modern Warfare MP2 Pack (size 9.1 GB)
  • Call of Duty Modern Warfare Multiplayer Pack 3 (Size 3.4 GB)

# 5. Scan and Repair Game Files (PC)

# 6. Change the DNS Settings (PC/Xbox)

  1. Press the Xbox button on your Xbox controller to open the Home screen and select the Settings
  2. Open All Settings and select Network.
  3. Navigate to the Advanced Settings tab and select DNS Settings.
  4. Select Manual from the drop-down menu, and then set the Primary DNS value to 67.222.222 and Secondary DNS to (OpenDNS), or for Google DNS.
  5. Save the changes and click on Continue to check if the DNS server works well.
  1. Open your Control Panel, and then change the View by type to Category and navigate to Network and Internet > Network and Sharing Centre > Change adapter settings.
  2. Right-click your current network and select Properties.
  3. Navigate to the Networking tab and select Internet Protocol Version 4 (TCP/IPv4), and then click on Properties.
  4. Select the Use the following DNS server addresses option, and then set the Preferred DNS server to 67.222.222and set Alternative DNS server to After that, click on OK to save the changes.

# 8. Reinstall the Game

  • Modern Warfare Base Game
  • Multiplayer pack 2 (22.1 GB)
  • Multiplayer pack (6.0 GB)
  • Multiplayer and Special Ops pack (6.7 GB)

# 9. Reset the Xbox One Console




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