Modern Warfare 2 & Warzone 2 Error Code 2901 | How To Fix

Here's a short guide explaining what causes error code 2901 in Call of Duty: MW 2 and Warzone 2, and what you can do to fix it.

Modern Warfare 2 & Warzone 2 are very slowly improving with each new season. They nerfed the ridiculous fire-shotgun, they removed Bomb Drones, and even ranked is in a good state now. But bugs and error codes will always be with us in Call of Duty.

In this article we will provide a brief overview of error code 2901, we will discuss what causes the bug and how we can get back online.

When you can get back online, we recommend switching to a competitive controller to get an advantage in CoD. The most affordable controller like this is the Xbox Elite .

CoD MW2 & Warzone 2: What Causes Error Code 2901?

Error code 2901 occurs when the CoD servers think you're trying to access MW2 or Warzone 2 from an outdated version of the game. Usually this occurs when some of the files on your console or PC have been corrupted during a recent update. But sometimes it's simply a mistake on the part of the Call of Duty servers.

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How To Fix Error Code 2901 in Modern Warfare 2 & Warzone 2

To fix error code 2901, start by simply trying to force your account to be re-verified with the servers, and if this fails, try re-installing one of the game packages.

Follow these steps, and after each one check to see if you have resolved error code 2901 before moving on to the next step:

Back out to the launch screen of MW2/Warzone 2, and try to log in.
Close the application and then re-open it and try to log in.
Check you're running the latest version of the game.
Reinstall one of the MW2/Warzone 2 content packs.

If all else fails then reinstall one of the content packs. Just installing one of the several content packs that make up MW2 should repair the version of the game on your console or PC.

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Reinstalling Content Packs In MW2 & Warzone 2

Warzone 2 and Modern Warfare 2 are made up of several smaller content packs, rather than being one 200+ GB download. Whenever your game has been corrupted by an update and cannot verify with the servers, reinstalling just one content pack almost always repairs the whole game. Here's how.

PlayStation

Here is how to install a single CoD content pack on PlayStation:

Find the Modern Warfare 2 app from the main PlayStation menu, and press "Options".
This will bring up some options for MW2, select "Manage Game Content".
You will be taken to a menu that shows you the different content packs, choose the smallest (Campaign Pack 2), and select the trash can symbol on the right to delete the pack.
Once the pack is deleted you will see a download logo where the trash can was, just select that logo to redownload and install the content pack.

Easy-peasy.

Xbox

The process is almost identical on Xbox:

Find Modern Warfare 2 on the Xbox home menu, and press "Start".
Select "Manage Game" from the list of options.
You will see all the content packs in this new window, select the tickbox next to the smallest content pack (Campaign Pack 2) and then delete from the options on the right.
Once the pack is deleted you can simply reselect the tickbox for this content pack and select download from the options on the right to reinstall it.

You'll get error code 2901 fixed in no time!

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PC

Follow these steps for PC. The stages are slightly different depending on whether you use Steam or Battle.net.

Battle.net

Open Battle.net and find Modern Warfare 2.
Press the cog besides the play button.
Select "Modify Install" from the dropdown list.
Now select "Game Content".
Select the smallest content pack (Campaign Pack 2), and "Install".
The pack will atomically be downloaded and installed.

Steam

Open up Steam and find Modern Warfare 2.
Right-click the game and select "Properties".
Go to the "DLC" tab of this new menu.
Select the smallest content pack (Campaign Pack 2), and "Install".
The content pack will be automatically added to downloads.

And there you have it, even if you need to reinstall a content pack, the downloads are not huge, so it shouldn't be that difficult or long for you to fix error code 2901.

No doubt the same error code will reappear later in CoD 2023: