How To Fix Minecraft Incompatible FML Modded Server Error (2025)

Minecraft is a popular sandbox game made from blocks that you can transform into whatever you can imagine through the use of mods. Unfortunately, like any other online game, it is also not immune to bugs and errors. Lately, many gamers are facing Minecraft Incompatible FML Modded Server errors.

Sometimes Incompatible mods can cause issues, such as Minecraft Incompatible FML Modded Server error. Are you also going through the same error, then here we share the reason you are seeing it and how to fix it with some quick and easy workarounds.

What Is FML?

FML stands for Forge Mod Loader, a mod loader that is used to load mods in Minecraft. When you install mods on a Minecraft server, they are loaded by FML. If the mods are not compatible with the server, FML will not be able to load them and the server will crash.

Solutions For Minecraft Incompatible FML Modded Server Error

Minecraft

If you are encountering a Minecraft incompatible FML modded server error, here are some solutions to solve it.

Check Mods’ Compatibility

Do check if the mods on your server are compatible. You can check their compatibility at https://lib.rs/crates/mod-compatibility-checker. Some mods may require specific versions to work without any errors.

Check Minecraft Version

Do check if your server and mods are using the same Minecraft version. You can do so by following the steps shared here:

  • Open the Minecraft Launcher.
  • Go to Installations and check for the installed versions.

Check The Mod Loader

Check that your server is using the correct mod loader for the mods you have installed. The mods should also be compatible with your mod loader or you will face the Minecraft incompatible FML modded server error.

Disable Some Mods

Minecraft Game

You may also disable some of the mods that are causing Minecraft incompatible FML modded server errors on your server.

Here is how to disable mods on your server:

Connect to your server by using an FTP client such as FileZilla. Post establishing a connection with your server locate the mods folder.

Go to the server folder list and navigate to a folder titled Mods. Click on the checkboxes next to the mods you wish to disable. The deselected mods will not be able to load when the server starts thus avoiding errors.

Update The Mods

Do keep the mods updated to the latest version released by Mod creators to fix compatibility problems. Go to the official website of the mod to see if there are any updates available.

If an update is available then tap on it. Updating your mods to their latest versions may also solve the error.

Uninstall And Reinstall Minecraft

Minecraft Block Game

If none of the above solutions work then you need to uninstall Minecraft and reinstall it from the official website again

  • Press the Windows key + “I” to open the Settings menu.
  • Go to Apps in the Settings menu.
  • Locate the Minecraft app and select it.
  • Tap on the three dots button and choose Uninstall from the Menu.
  • After a few minutes download the Minecraft installation file from the official website.
  • Once the download is complete, install Minecraft on your PC.

We hope the above solutions have been helpful and the issue has been resolved.

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