Makarov and a wolf man in MW3 season 3
Image via Activision

How to fix the Dev error 5433 in MW3 and Warzone

MW3's developer error 5433 has a simple fix, but it may take a few tries before it's completely gone.

Feeling frustrated by Dev Error 5433 interrupting your matches in Call of Duty: Modern Warfare 3 or Warzone? You’re not alone. This error can be a real buzzkill since it prevents players from accessing the game’s online feature, even making the Zombies mode inaccessible.

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While I received the 5433 Call of Duty error on PC, I also stumbled upon console players, on PS5 and Xbox, reporting it on forums, meaning the Dev error 5433 isn’t exclusive to just one platform.

How do you fix the Dev error 5433 in MW3?

MW3 Zombies season three Warlord, Rainmaker.
Come on, devs, not this time. Image via Activision Blizzard.

The best fix for the Dev error 5433 in MW3 requires you to adjust your On-Demand Texture Streaming settings.

  • Launch MW3.
  • Navigate to Game Settings.
  • Select the Graphics tab.
  • Look for the option labeled “On-Demand Texture Streaming.”
  • Change the Allocated Texture Cache size to “Small.”

Dev error 5433 should disappear after applying the steps above. However, if you continue to experience this error, there are alternative solution methods you can try. Changing the in-game language, restarting your gaming device, and reinstalling MW3 are the three other fixes for the Dev error 5433.

If you continue to receive this error after trying out our fixes, then it’s likely that there is a problem with a recent update in the game and it’s something that must be fixed by Activision. This kind of error often pops up right after new updates, such as the Season Three Reloaded update on May 1, 2024, when the error was very prevalent.

What causes the Dev error 5433 in MW3?

Zombie outlines standing in front of purple, menacing cloud.
It comes out of nowhere sometimes. Image via Activision

The Dev error 5433 in MW3 appears due to corrupted or overloaded cache data, which causes conflicts within the game. This could be leftover files from previous updates or temporary data exceeding its limits.

Also, in rare cases, the error might be triggered when MW3 tries to use more graphics memory than is available. This could be due to high-resolution textures or conflicts with your graphics drivers, so you can also try lowering the quality of your graphical settings as a final resort.


When it comes to errors in MW3, there are many others that can prevent you from accessing online features. Most of these often occur when MW3’s servers are down. When there’s a server outage, your only option is to wait, and all related errors should disappear when MW3 is online again.


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Gökhan Çakır
Gökhan is a Staff Writer and Fortnite Lead at Dot Esports. Gökhan graduated as an industrial engineer in 2020 and has since been with Dot Esports. As a natural-born gamer, he honed his skills to a professional level in Dota 2. Upon giving up on the Aegis of Champions in 2019, Gökhan started his writing career, covering all things gaming, while his heart remains a lifetime defender of the Ancients.
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Scott Duwe
Staff Writer & Call of Duty lead. Professional writer for over 10 years. Lover of all things Marvel, Destiny 2, Metal Gear, Final Fantasy, Resident Evil, and more. Previous bylines include PC Gamer, Red Bull Esports, Fanbyte, and Esports Nation. DogDad to Yogi the Corgi, sports fan (NY Yankees, NY Jets, NY Rangers, NY Knicks), Paramore fanatic, cardio enthusiast.