Helldivers 2: Steam AppID Supplied Is Invalid Fix

If you get the Steam AppID supplied invalid fix error in Helldivers 2, here’s everything you need to know on how to fix it.

In short, the best solution you can try is to validate the game’s files through Steam and make sure to select ‘yes’ when asked also to uninstall the anti-cheat. As the files are validating, the game will reinstall the anti-cheat, and the issue will be solved.

Let’s go through the process in further detail.

Steam AppID Error Fix in Helldivers 2

How to fix Steam AppID supplied is invalid in Helldivers 2.

As you’re launching the game, if you get the “Steam AppId supplied is invalid or not allowed” error with the code 10002018. Let’s go through all the solutions you can try.

Validate Game Files & Delete Anti-Cheat

Overall, the best way to fix this error is by validating the game’s files.

From Steam, right-click on Helldivers 2, select Properties, navigate to the Installed Files tab, and select ‘Verify integrity of game files’. When prompted, select to also disable the anti-cheat from there.

Wait until the verification is complete and the game reinstalls the anti-cheat. This should fix the issue upon relaunching the game.

Delete AppID

Another solution you can try is deleting the Steam AppId text. Select Helldivers 2 on Steam, then ‘Manage’, and then ‘Browse Files’. From there, delete the Steam AppId text file and relaunch the game.

Restart Steam

The simplest solution is to perform a full restart of Steam. Close the game and Steam, and also make sure to close any Steam-related apps through Task Manager (Ctrl+Shift+Esc).

Relaunch the game, and if the issue persists, move on to the next step.

Reinstall Helldivers 2

If the issue persists, the last thing you can try is fully reinstalling the game. Uninstall it through Steam and use File Explorer to ensure you’ve deleted all game-related files.

Reinstall it again, and hopefully, the issue will be fixed. Alternatively, wait for an update since the game is early access, and new performance updates are released almost daily.

If the issue is fixed but you’re dealing with other errors, here’s what to do if Helldivers 2 crashes when selecting servers and how to solve the black screen on startup issue.

Wrapping up

To sum up, if you get the ‘Steam AppId supplied is invalid’ error, there are various ways to fix it.

The best solution involves verifying the game’s files and reinstalling the anti-cheat, while other possible fixes include deleting the AppId text file, restarting Steam, and reinstalling the game.

Did this solve the issue for you? Have you been facing any other performance issues since launch? Let us know in the comments below.

Before leaving, consider also checking out our guide on how to play with randoms in Helldivers 2.

Author
Recent Posts

Harry

Harry has been a fan of video games from a very young age and writing allows him to share that passion with others. His favorite genres include MMORPGs, survival, and FPS.

He has a Master’s Degree in Philosophy, which allows him to always come up with a fresh approach to solving in-game puzzles and challenges, but also to create content that’s to the point, clean and easy to follow.