People playing the Modern Warfare 2 beta may have run into the MW2 Detrick Guernsey error code, which is prohibiting players from enjoying the beta and going into games. It’s caused a lot of issues among the Modern Warfare 2 beta player base, and there’s no real in-game explanation about why it’s occurring frequently. So check out our guide for a breakdown of the MW2 Detrick Guernsey error code.
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MW2 Detrick Guernsey Error Code: What Is It?

The MW2 Detrick Guernsey error code is just that, an error code that appears when players attempt to log into the Modern Warfare 2 servers while the beta is inactive. As of writing this on September 23, the beta is up and running again, but it originally took place between September 16 and September 20, leaving a two-day period where it was down. During this period, players inevitably tried to log in and were met with the error code.
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MW2 Detrick Guernsey Error Code: Can You Fix It?
The MW2 Detrick Guernsey error code has no fix, and if you come across it you will need to wait until the beta servers are back online. The second beta weekend for Modern Warfare 2 began on September 22 at 6 pm BST, but this is only for the crowd who pre-ordered the game. If you haven’t pre-ordered the game, then you will have to wait until September 24, when the open beta period begins.
It’s incredibly likely that the Detrick Guernsey error code will occur again after the second beta weekend ends, but remember that this is set to be the final beta weekend before the game releases on October 26.
That’s all for our explainer of the MW2 Detrick Guernsey error code, and now you know why the error appears and how to avoid it.
Why not also check out the full rundown of all the Modern Warfare 2 maps, which includes remixes of old favourites and brand-new arenas to fight in.