How to Fix Dev Error 5433 in MW3 (Modern Warfare 3)

Many players are being locked out of multiplayer and Zombies in Call of Duty Modern Warfare 3 due to a “dev error 5433” bug. This guide will explain how to fix dev error 5433 in MW3 and explain what it means.

What is Dev Error 5433 in MW3? Explained

Call of Duty Modern Warfare 3 Season 3 Reloaded is now live, and many players have been getting hit with the dreaded “dev error 5433” bug when trying to boot up Zombies or multiplayer in MW3. If you are confused about what the bug means, that is understandable, as the error message doesn’t exactly make it clear. We’ve got you covered!

The dev error 5433 MW3 message is a patch bug that usually happens after a major update has been released. With Season 3 Reloaded launching on May 1, 2024, many players are getting the error after updating their game. Thankfully, there are a few ways to fix the problem, which we’ll detail below.

How do I fix Dev Error 5433 in MW3?

To try to fix Dev Error 5433 in MW3, change your Texture Cache settings. However, while this method seems to work for most players, if it doesn’t fix your issue, you may need to reinstall your game.

With that said, here are the steps to fix “dev error 5433”:

• Boot up MW3 and access your menu.
• Go to “Game Settings” and click the “Graphics” option.
• In Graphics, go to “Details & Textures” and look for “On Demand Texture Streaming.”
• Press “Square (PlayStation) or “X” (Xbox) to “show more” on the “On Demand Texture Streaming” option.
• Next, change “Allocated Texture Cache” from “Auto” to “Small.”
• Reload your entire game after making this change.
• If your game is fixed, you can go back into this setting and switch “Allocated Texture Cache Size” back to “Auto” or whatever the previous setting was. You just need to toggle it initially to get the game to work.

As stated earlier, if the above method doesn’t work, then your best bet is to delete Call of Duty Modern Warfare 3 off your PS5 or PC and completely reinstall it. The error message is specifically caused by your game files being updated with the new patch. So you will need to do a clean install.

Call of Duty: Modern Warfare 3 is now available on PlayStation 4, PlayStation 5, PC, Xbox One, and Xbox Series X/S.