Are you a fan of Call of Duty: Modern Warfare 3 but frustrated by the “Client Command Overflow” error? You’re not alone.
Many players have encountered this issue, which can be a real buzzkill when you’re in the middle of an intense gaming session. But fear not!
In this blog, we’ll provide you with effective solutions to get you back into the action-packed world of COD Modern Warfare 3 in no time.
How To Fix Client Command Overflow In COD Modern Warfare 3?

To fix “Client Command Overflow” in COD Modern Warfare 3 you can restart the game and system, check your internet connection, reduce in-game actions. Additionally, you can update the game, verify the game files, and clear console cache.
1. Restart The Game And System
Begin by simply exiting the game and restarting your gaming console or PC. This can clear temporary glitches and is often the simplest fix.
To restart the game:
- Close the game application.
- Wait a few seconds.
- Reopen the game application.
To restart the system:
- Shut down the system through the power menu.
- Wait until it powers off completely.
- Turn the system back on.
2. Check Your Internet Connection
Ensure your internet connection is stable and strong. A poor connection can cause a backlog of commands, leading to an overflow.
Test your internet connection for stability and speed. Consider using a wired connection if you’re on Wi-Fi. Restart your router or modem if necessary.
- Unplug the power cord.
- Wait 30 seconds.
- Replug the power cord.
- Wait for the lights to stabilize.
3. Reduce In-Game Actions
If you’re performing too many actions at once or using a rapid-fire mod, try slowing down your in-game actions. Overloading the server with too many commands can trigger this error.
Disable any macros or automated scripts that perform actions in-game. Refrain from using mods or controllers that offer rapid-fire capabilities.
4. Update The Game
Check for any available updates for Call of Duty: Modern Warfare 3. Developers often release patches to fix bugs and errors, including command overflow issues.
- Open the game launcher (e.g., Steam, Battle.net).
- Navigate to the game’s library page.
- If an update is available, select ‘Update‘ or the game will update automatically.
5. Verify Game Files
Verifying game files can help fix errors and issues by ensuring all necessary files are present and intact. This process compares your local files with those on the game’s servers and repairs any discrepancies.
For Steam:
- Open the Steam client
- Navigate to your Library.
- Right-click on Call of Duty: Modern Warfare 3.
- Select ‘Properties‘ from the menu.
- Click on the ‘Local Files‘ tab.
- Click ‘Verify Integrity of Game Files‘ button.
For Battle.net:
- Open the Battle.net client.
- Click on the Call of Duty: Modern Warfare 3 icon.
- Click the gear icon next to the ‘Play‘ button.
- Select ‘Scan and Repair‘ from the dropdown menu.
- Click ‘Begin Scan‘.
6. Clear Console Cache
Clearing the cache on a gaming console can help resolve performance issues and software glitches by removing temporary files. This process does not affect your saved games or data.
- Turn off the console.
- Unplug the power cord.
- Wait for 1-2 minutes.
- Reconnect the power cord.
- Turn on the console.
7. Adjust Config Files (PC Only)
PC players might consider adjusting or deleting specific configuration files that could be causing the error. For example, some users found that removing the config.cfg
file in the Call of Duty Modern Warfare folder in Documents resolved their issue
- Go to the Documents folder.
- Open the Call of Duty Modern Warfare folder.
- Find and delete or rename the config.cfg file.
- Launch the game to create a new config file.
8. Contact Support Of COD Modern Warfare 3

If none of these steps work, the last resort would be to contact Activision Support for further assistance with the error.