Minecraft Error Codes List (And How To Fix Them)

Nothing’s worse than launching Minecraft but seeing an error code come in front of you, which you have no knowledge. Luckily, we’re here with a list of the most common error codes and how to solve them.

Keep in mind that many of these errors only pop up in older versions of Minecraft and have been fixed since then, so don’t be too surprised if you haven’t even heard of some of them.

Connection refused: connect

Confirm you’ve entered the correct server address. If it still doesn’t work, restart your router, flush your DNS, and tweak your firewall, antivirus, or proxy settings.

Creeper/ Error Code 221000

Ensure your internet connection is stable and working properly

Crossbow

Close the game completely (ensure it isn’t running in the background either) and let it sit idle for around two minutes before starting it again.

Drowned

Restart your device after ensuring Minecraft has been closed completely and then try again.

End of stream

Restart the application.

Ghast

What you have to do depends on what device you’re playing Minecraft on. If on Windows or an Xbox, try logging out of Xbox live and signing in again. However, if this comes on Switch, try pressing the “Clear Account Credentials” button in the settings tab.

Glowstone

Since this is likely an issue with the service itself, you’ll have to wait for it to get solved. However, sometimes restarting the application does the trick.

Haybale

This indicates an Xbox authorization error. First, ensure the Xbox app is up to date. If it is, log out of your account and sign in again.

More N4G Unlocked: Minecraft – Best Ways to Get XP (2023)

Piglin

Simply restarting the game should fix this problem.

Pufferfish

Fully close Minecraft (force close it if you have to) and restart it.

Ensure the version of Minecraft you’re running is the same as the server. If it is, disconnect your wifi, wait a few minutes, and try again.

This will either be an internal service error or an error related to your internet. If it’s the former, you’ll have to wait a while; if it’s your internet, you’ll have to troubleshoot it.

Ensure your firewall isn’t causing issues by disabling it temporarily and trying again. If it still doesn’t work and your internet is working fine, then you’ll have to wait for the maintenance to be over.

Sugar Cane

This Playstation-exclusive error pops up when you’re trying to log in to an Xbox account different from the one already linked with your Playstation account.

This server responded with an invalid server key

Two things might cause this. Either the server you’re connecting to is outdated, in which case you won’t be able to connect to it, or you will have to log in again.

Took too long to log in

Most likely, your internet speed is either too slow or too inconsistent.

User Not Premium

Happens if you try to play an unofficial version of the game. If you’ve purchased it and this error isn’t deserved, try verifying your licenses.

You are not whitelisted on this server

Ask either the server owner or a server admin to permit you to connect to the server.

Minecraft Error Codes that Result in Crashes

Failed to check session lock, aborting

Go to the session folder and look for a file that says “.lock’. Delete it and try again.

Launching the Game Failed

Uninstall and then reinstall the Minecraft launcher. If it doesn’t work, then you might have to uninstall Minecraft completely, as this usually happens because of a corrupt jar file.

Alternatively, running the game as an administrator might also work.

Code – 805306369

This usually happens because of a lack of memory in your system. Try making more space by deleting stuff or closing some background applications.

More N4G Unlocked: 10 Best Minecraft Pillager Outpost Seeds

Code – 1073740940

Allocate more RAM to the Java Virtual Machine that’s running the game. You’ll have to buy more if you don’t have RAM available.

Code – 1073740791

Update all of your drivers, and this error code should go away.

Code: – 1073741819

This error code is exclusive to Nvidia drivers. You’ll either have to get them updated automatically or manually from the Nvidia website.

Minecraft Errors That Show While the Game is Running

Error: java.lang.NoClassDefFoundError: cer Exit Code: -1

There’s some issue with your current world, because of which you’ll have to start a new one. Unfortunately, there’s no way to save your world data.

Game Ended with Bad State: Exit Code 1

Update JAVA, update all your drivers, and finally, update Minecraft. If the issue remains, uninstall the game and then reinstall it.

World Is Corrupt

Restore the save to a previous backup, as the current files have been corrupted.

java.lang.OutOfMemoryError

Allocate more RAM to the Java Virtual Machine that’s running the game. If you don’t have RAM available, then you’ll have to buy more.

RuntimeException: No OpenGL context found in the current thread.

Ensure your drivers are up to date. If they are, you’ll likely have to get a better graphics card, as the current one is too weak.