Are you getting a dev error 7186 in Call of Duty: Modern Warfare 2 DMZ?
The error message can happen in ground war, invasion, and other game modes.
It happens because the Call of Duty servers are unstable ever since the latest update.
Console players playing on PS4, PS5, Xbox One/X/S, are more prone to getting the error.
In this guide, you’ll learn how to fix dev error 7186 in Call of Duty: Modern Warfare 2 DMZ (MW2) in Xbox, PS4, PS5, and PC.
How to Fix Dev Error 7186 in MW2
To fix dev error 7186 in MW2, you need to update your console and game.
You can also try to clear the game data, persistent storage, or alternate MAC address.
- Method 1: Update your console and game – Settings > System > Updates > Update. My games & apps > Games > Call of Duty: Modern Warfare 2 > Manage game and add-ons > Update > Update all.
- Method 2: Clear game data – My games & apps > Games > Call of Duty: Modern Warfare 2 > Manage game and add-ons > Saved data > Select your profile > Delete everywhere.
- Method 3: Clear persistent storage – Settings > Device & connections > Blu-ray > Persistent storage > Clear persistent storage.
- Method 4: Clear alternate MAC address – Settings > General > Network settings > Advanced settings > Alternate MAC address > Clear > Restart.
- Method 5: Uninstall and reinstall MW2 – Settings > System > Updates > Update. My games & apps > Games > Call of Duty: Modern Warfare 2 > Uninstall > Reinstall.
If the error still persists, you need to wait until a new MW2 update is released.
The current MW2 version is unstable as many players experienced crashes while playing ground war and invasion.
Further reading
How to Fix “Failed to load the main menu from the current game mod” in Baldur’s Gate 3
How to Fix “There was a problem sending data, please reconnect” on Roblox
