Modern Warfare 3 "Puerto Corpus" error: Possible fixes and reasons

The Modern Warfare 3 "Puerto Corpus" error is a network error in the game that is accompanied by a 'Waiting for relay' notice. It usually happens when players are trying to join a match or just trying to connect to the lobby after a match has ended. This forces the user to restart the game every time and even then, it may persist in a few cases and prevent users from playing the game.

The problem unfortunately isn't just limited to the Multiplayer modes and can often present itself in Zombies as well. It can be both server-sided (Call of Duty servers) as well as client-sided (user). If it's the prior, then users can do little to resolve the issue. However, if it's client-sided, users can implement a few known fixes that can potentially solve the problem.

Hence, in this brief guide, we'll take a closer look at some of the possible fixes for the Modern Warfare 3 "Puerto Corpus" error.

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Possible fixes for the Modern Warfare 3 "Puerto Corpus" error

Before you start with the fixes for the Modern Warfare 3 "Puerto Corpus" error, it is recommended to check the Call of Duty server status. If they are up and no issues have been reported, you can be sure that the problem lies on your end and not the game's servers.

Status - waiting for relay- Puerto-Corpus byu/madmikeyd419 inDMZ

Here are some of the possible fixes for the Modern Warfare 3 "Puerto Corpus" error:

Restart your router

The first thing that you should try doing is restarting your router, especially if the router has been turned on for a while. This will reset the cache and can resolve a host of network-related issues, including the Modern Warfare 3 "Puerto Corpus" error. A proper restart requires you to remove all the power cables from the router and let it remain idle for at least 10-20 seconds. Then, plug the cables back in and let the router boot up.

Many users often tend to overlook this simple yet effective method to deal with such errors. Hence, it is highly advised to restart your router first and then proceed with the next fixes.

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Turn off On-Demand Texture Streaming

Turning off On-Demand Texture Streaming in Modern Warfare 3 (Image via Activision)

Since the Modern Warfare 3 "Puerto Corpus" error is a network error, it is highly recommended to turn off On-Demand Texture Streaming. If your ISP doesn't have the best bandwidth, it is always recommended to turn this setting off. Sure, you'll miss out on visuals a little, but at the end of the day, the pros will always outweigh the cons.

Here's how you can turn it off:

• Launch the game.
• Go to the 'Settings' menu and select 'Graphics'.
• Navigate to the 'Quality' section.
• Under 'Details & Textures', find "On-Demand Texture Streaming" and turn it off.

Turning on this feature makes the game download textures in the background as you play, which can cause a plethora of network issues such as packet loss, high latency, and more when you don't have a connection with high bandwidth. Hence, you should always turn this setting off, especially if you are playing the Multiplayer modes.

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Use a different ISP

If you have been able to confirm that the issue is with your config, it is advised to try using a different ISP to play the game. Sometimes, certain ISPs tend to block ports from their end, and as a result, your matchmaking becomes limited. Hence, if you have a different ISP at home, try using it. Alternatively, you can also try using your mobile hotspot for a connection.

If you are able to play the game without any issues on your secondary connection, it is recommended to contact your ISP for assistance with the connection issues in the game.

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That covers all the known possible fixes for the Modern Warfare 3 "Puerto Corpus" error. If the error persists despite implementing the fixes, you should try getting in touch with the Activision Support team for assistance.

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