How to Troubleshoot: Internal Server Error in Minecraft on Windows 10

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Minecraft is one of the most popular online multiplayer games; it has a huge base of players who enjoy its gameplay. However, in this article, we will look at an internal server error in Minecraft that some users have been getting when trying to connect to a server or sometimes even while playing the game.

What causes an “Internal Server Error” in Minecraft?

Damaged installation: Your installation may be corrupt or contain erroneous variables. Minecraft installations get corrupted all the time, and you don’t have to worry. A few deletions here and there will fix the problem.

Minecraft Version: We’ve seen Forge remove older versions of Minecraft in the past because compatible versions can connect to servers. If you’re using an older version, there’s a good chance you’ll run into this problem when connecting.

Mod Paks: Sometimes the mods in your Minecraft installation are corrupt or incompatible. In this case, you’ll have to look for the cause of the problem yourself, which may occur.

Bad plugins: Bad plugins, like mods, have been known to cause problems in Minecraft. Here we can try to diagnose the one causing the problem and, if necessary, remove/update it.

Temporary files: Every game creates temporary files for its proper functioning and for its work. These temporary files may be corrupted or in an error state. The same protections apply to the latter cause.

How to solve the “Internal Server Error” in Minecraft?



Updated: March 2025

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Delete a user profile

The first thing to do in this case is to try to delete the user profile. This will only delete the temporary data, after which it will be created anew.

  1. Go to the official MCCUID website to get the UUID.
  2. Login to the server, access your server files, and go to the World section.
  3. Select the players and delete the username and UUID of the person who received the error message.
  4. Reboot the local computer and try connecting to the server again.
  5. Check to see if the Minecraft server internal error continues to occur.

Uninstall Minecraft and reinstall it

  1. Press Windows + R, type “appwiz.cpl” in the dialog box, and press Enter.
  2. In the app manager, find Minecraft, right-click on it and select “Uninstall”.
  3. Go to the official Minecraft website.
  4. Download and install the game.

Try disabling mods

Minecraft is a game where you can install mods. This improves the gameplay and makes it more enjoyable. However, sometimes these mods can cause problems. Therefore, you should deactivate all installed mods to see if this is the reason.

  1. Open the Minecraft launcher.
  2. Go to the Profile Editor tab and find the profile you want to delete.
  3. Right-click on the profile and select Delete Profile.
  4. Confirm profile deletion
  5. Close the Minecraft launcher
  6. Press the Windows key and the R key.
  7. Enter %appdata% and press OK
  8. Navigate to the .minecraft folder and then to the .versions folder.
  9. Find the Version folder containing the mod you want to remove and delete it.



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Frequently Asked Questions

Go to "mcuuid.net" and get your UUID after providing all the data. Then login to the server and go to the server files, then go to the world. Select the players and remove the username and UUID for your profile or for the one who got the error. Restart your computer and try to connect to the server again.

  1. Check if your computer needs updates and apply them. This is especially true for the video cards and system updates.
  2. Reboot your computer after all the updates are complete.
  3. After that, your application should work again.

When you join a server in Minecraft, you may get an `Internal Server Error' message. This usually means that there is a problem with your local computer and that there is either a misconfiguration or a delay between mods, etc.