Code Erreur 664640: The new problem is the Error Code 664640, which happens when the online profile is stuck. The error message does not really detail what the problem is to make it worse. Thankfully, we have some details as to what modern warfare error code 664640.
Modern warfare error code 664640 is a client hardware-gaming server connection difficulty. It normally happens when you hit the online profile of the customer. Typically, error 664640 fixes over time, but console players can repair it by modifying their settings on the DNS server.
It is important to verify that Modern Warfare servers are up and running before adjusting any settings. Error code 664640 is typically blue, sometimes around the time when servers are changed. You can not presume that the issue is at your end if the game performed well before. After all, internet access itself is the biggest element in internet games.
To make sure that the problem is not over, try to verify whether there are communication problems with other Modern Warfare players. It is the best place to look at DownDetector.