Elden Ring inappropriate activity detected error: How to fix, possible causes, and more

The release of Shadow of the Erdtree brought with it new compatibility issues to existing mod tools, along with a plethora of bugs, such as the Elden Ring inappropriate activity detected error. This error pops up whenever Easy Anti-Cheat (EAC) is tripped while connected to the internet, blocking off online functionality in the process.

While this “bug” is rather easy to trigger, its solutions are also easy to implement, so you'll be able to get back to playing the Elden Ring DLC in a few minutes.

A breakdown of the Elden Ring inappropriate activity detected error can be found below, detailing its root cause and probable fixes.

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What is the Elden Ring inappropriate activity detected error?

This particular error message is generated whenever players trip the anti-cheat baked into the game. EAC is highly sensitive to changes and can block your online progression at a moment’s notice if it detects changes to hardware or strange behavior in the operating system.

As per multiple user reports online, the Elden Ring inappropriate activity bug has been confirmed to be triggered by the following factors:

• Using a non-Windows-based operating system, such as Linux (or macOS via Crossover/Whisky).
• Changing TDP on the fly in certain handheld gaming PCs.
• Usage of mods.

Keep in mind that the list above is not complete, and there may be other issues (which are still undocumented) that could lead to the anti-cheat being triggered.

Update: Bandai Namco has confirmed that the "Elden Ring inappropriate activity detected" error message may pop up, at random on PC. This message pops up even if players are not bypassing the anti-cheat.

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How to fix the Elden Ring inappropriate activity detected error

How to fix the Elden Ring inappropriate activity detected error? (Image via FromSoftware)

Readers can refer to the list of generic fixes below to resume online co-op functionality in the Elden Ring DLC:

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Uninstall any mods or tools

Mods and/or tools that modify Elden Ring’s game files are strictly prohibited in multiplayer sessions. If the anti-cheat detects a modded game, it will immediately throw up the “inappropriate activity detected” error, booting players out of the session and subsequently locking online functionality.

The best way to deal with this issue is to completely remove all mods and play the stock version of the game.

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Play the game on Windows for now

This particular error has been noted to pop up on Linux-based operating systems (such as the Steam Deck), after the version 1.12 update. Publisher Bandai Namco Entertainment is yet to provide a fix for this, and players would be better off running the game on Windows until a patch is issued.

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Restart and/or reinstall your copy of Elden Ring on PC

Assuming game files are corrupted and/or modified beyond repair, the only alternative is to completely nuke the game from your drive. Reinstalling the game is your best course of action, as it will restore the full, unmodified version of Elden Ring. This should hopefully restore online functionality and allow you to play through the DLC without further inappropriate activity detected flags.

Alternatively, you can also verify the integrity of game files before attempting to restart the game - which is the official, recommended solution.

Keep in mind that the fixes listed above are not guaranteed to work for everyone, and readers can expect to have varying rates of success with the mentioned methods.