Box art - Call of Duty: Modern Warfare

Call of Duty: Modern Warfare Error Code 664640 fix

Yet another connection problem is preventing players from enjoying Call of Duty: Modern Warfare. The latest issue is error code 664640, which appears when the game gets stuck fetching the online profile. To make matters worse, the error message doesn’t really detail what the problem is. Fortunately, we’ve got some information on what Modern Warfare error code 664640 is and what you can do to fix it.

Modern Warfare Error Code 664640 | How to fix

modern warfare error code 664640 how to fix

The Call of Duty: Modern Warfare error code 664640 is a connection problem between the client hardware and game servers. It typically appears when the game gets stuck fetching the user’s online profile. Error 664640 typically resolves over time, but console players may be able to fix it by adjusting their DNS server settings.

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Before you go changing any settings, it’s worth checking to make sure that the Modern Warfare servers are up and running. Error code 664640 tends to appear out of the blue, often around the time when updates are pushed to servers. If the game was working fine before, you shouldn’t assume that the problem is on your end. After all, the biggest variable in internet-connected games is the internet connection itself.

To make sure the problem isn’t on your end, try checking to see if other Modern Warfare players are experiencing connectivity issues. DownDetector is the perfect place to look. If there’s a spike in error reports, chances are good that you’re not alone, and you should simply wait for the servers to stabilize again.

However, some users have reported that error code 664640 is a consistent issue, particularly on PlayStation 4. Thankfully, there is a workaround that involves adjusting the console’s DNS server settings. Head to Network Settings and look for the option to manually define a DNS server. From there, enter either or With any luck, this will allow the game to successfully reconnect and fetch your online profile.

Error code 664640 in Call of Duty: Modern Warfare is another problem that the team at Activision hasn’t strictly defined. Thankfully, it tends to fix itself over time. If it doesn’t, it’s worth looking into any possible problems with your home network or internet connection.