After investigating this particular issue, it turns out that there are several different causes that might cause this particular error code. Here’s a shortlist of culprits that affected users have confirmed:

Method 1: Checking for Server Issues

Before you try any of the other potential fixes below, you should start by ensuring that Forza Horizon is not currently affected by a widespread server issue that is making the built-in Marketplace unaccessible. This is even more likely if the multiplayer component is no longer working. To find out if other Forza Horizon users are also encountering this problem, you should start by checking services like DownDetector and Services Down. If you found recent reports of users having the same kind of problem with the game, you should also take the time to investigate if Xbox Live is currently having widespread issues by checking out the official status page. Note: In case you have successfully confirmed that you’re dealing with a server issue, the only thing you can do at this point is to wait for PlayGround Games (Forza developers) to fix their server issues or for Microsoft to fix their Xbox Live infrastructure. If the status page doesn’t report anything related to your Forza game, you can safely conclude that the error you’re seeing pops up due to something that’s occurring locally – In this case, one of the methods below should allow you fix the problem.

Method 2: Restart or Power-Cycle affected Device

As it turns out, you might experience this problem due to a temporary glitch that can be resolved by a simple device restart. This potential fix was confirmed by both PC and Xbox users with both Forza Horizon 3 and Forza Horizon 4. If you’re on PC, simply initiate a restart and repeat the action that is currently causing the marketplace error once the next startup is complete. In case you are encountering the issue on Xbox One, follow the instructions below to power-cycle the game console: If the same problem is still occurring, move down to the next potential fix below.

Method 3: Installing DLC from the Manage Game menu (Xbox One Only)

If you’re encountering this problem while attempting to access content from a DLC that you previously purchased on Xbox One, chances are you have ownership for it but you haven’t specifically downloaded it locally. This problem is fairly common with the Blizzard Mountain DLC. Fortunately, Xbox One users that were having this issue have managed to fix this problem by accessing the Manage menu of Forza Horizon 3 and downloading the DLC locally. If this scenario is applicable, follow the instructions below to install the missing DLC locally: If the same marketplace error is still occurring, move down to the next potential fix below.

Method 4: Clearing the Alternate MAC Address (if applicable)

if you’re seeing the ‘marketplace error‘ on Xbox One’ One of the most effective fixes for this kind of issue is to clear the alternate MAC address that is currently stored by your console. This fix was confirmed to be effective by a lot of affected users. Keep in mind that clearing your MAC address will not affect your console in any way – This feature was developed to allow Xbox One users to grant their console the same MAC address as their PC in order to avoid hotel and other types of restricted networks. If you haven’t tried clearing the Alternate MAC address of your console yet, here are the step-by-step instructions on how to do this:

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