How to Fix Modern Warfare Error Cause 10, Error Code 2004

Modern Warfare is nothing without the online multiplayer experience. However, while playing matchmaking in Modern Warfare 2, you may have stumbled upon an issue called Error Reason 10. Error code 2004". This is an error that only occurs when matching online. However, there are some solutions that can fix this problem and you can enter multiplayer games immediately.

Solution –

1. Simply close the game and restart. Restarting the game should resolve the issue.

2. Check the network connection your device is connected to. Required for multiplayer Stable, low-latency network speed is required to work properly.

Fix 1 – Delete MW2 Save File

A corrupted Modern Warfare 2 save file is causing this issue, you can fix this by removing it from your system Delete the MW2 save file to fix it.

Step 1 –ExitCall of Duty: Modern Warfare 2. If you are downloading from Battle.NET /SteamRun it, please close it too.

Step 2 - Call of Duty: Modern Warfare 2Save the game files on your system" Documents" folder.

Step 3 –So, press the Win E key to open File Explorer. There , moving forward -

C:\Users\Sambit\Documents\Call of Duty Modern Warfare\players

We recommend that you copy all the items in this box and save them on your desktop. That way, if anything goes wrong, you'll have a backup to fall back on.

Step 4 – Select all the contents in this folder and click Delete to delete them.

Exit File Explorer and launch COD MW2 again to check if this resolves the issue.

Fix 2 – Verify integrity of COD MW2 files

Certain COD MW2 local files on your system may Corrupted/lost. In this case, please verify the game to rebuild the game files.

Step 1 –Exit COD MW2 and launch Steam Client.

Step 2 - Continue and go to "Library". In the left pane look for "Call of Duty: Modern Warfare II".

Step 3 –Next, right-click on the game and click "Properties".

Step 4 – Next, open “Local Files”. Then, simply click on “Verify integrity of game files…" to verify all game files for possible corruption.

Wait until Steam scans the entire game and repairs all corrupted components.

Launch the game

Fix 3 – Check if the COD server is down

Check if the Activision server is down or if Blizzard is facing issues.

Step 1 – Open the Activision support page.

Step 2 - There you will see a box. Just switch it to "Call of Duty Modern Warfare 2" or any other game facing this issue.

Step 3 - If "All Platforms" says "Online", then there is no problem understanding Call of Duty Warfare 2's Online multiplayer.

Otherwise, if it shows any indication of "Server is down for maintenance" or any similar statement,

Fix 4 - Renew IP Configuration

Sometimes, when playing Modern Warfare 2, the IP configuration can cause this issue. Please follow the steps below.

Step 1 –Enter “cmd” in the search box. Then, right-click "Command Prompt" and click "Run as administrator".

Step 2 –When you get to the terminal, type this and press Enter to run these IP configuration scans.

netsh winsock resetnetsh int ip resetipconfig /releaseipconfig /renew

After running all these network scan codes, launch Call of Duty: Modern Warfare 2 and check if error code 2004 has been resolved.

Fix 5 – Allow Modern Warfare through Firewall

If Modern Warfare 2 connections are blocked by a firewall, allowing Modern Warfare should fix it.

Step 1 –Click ⊞ Win R and Copy and paste this.

firewall.cpl

Step 2 –Click “OK”.

Step 3 –When you enter the firewall settings, click on “Allow applications through Windows Defender Firewall” to turn it on.

Step 4 –You can change the firewall settings. Click "Change Settings".

Step 5 – Find the “Call of Duty: Modern Warfare 2” app or “mw2_64” in the list .exe".

Step 6 – Now, make sure is checked in the “Private” and “Public” panes Allow" box.

Step 7 –Don’t forget to click “OK” to save this change.

After allowing COD MW2 through the firewall, you should not have any issues playing online multiplayer games.

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