Fatally Missing Registry Entries Minecraft

If you’ve been playing Minecraft for a while, you’ve probably come across the ‘Fatally Missing Registry Entries’ error message when connecting to a Minecraft server with mods.

This error usually indicates that there is something wrong with your Minecraft config files and in most cases, it can be fixed by simply copying working config files from a friend.

In this article, we’ll explain what the ‘Fatally Missing Registry Entries’ error means and how you can fix it. We’ll also provide some tips on how to prevent this error from occurring in the future.

Why Do I Get The Fatally Missing Registry Entries Error?

The most obvious reason for this error is there might be a mismatch between your configuration files for modpack on the server and client.

A slight conflict in the config files will prompt “Fatally missing registry entries” while connecting to the server.

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You need to make sure that the config files and mods are precisely the same on both the server and client sides.

These mod files in the client  (your PC which is used to connect to the server) are located in the ‘%appdata%/roaming/.minecraft/config’ folder

Quick tip – You can type ‘%appdata%’ in the windows search bar to easily access this location.

How To Fix Fatally Missing Registry Entries

The best way to resolve this is to copy the config files from someone you know (like a friend who you used to play with), who can connect to the game properly.

Why Do I Get The Fatally Missing Registry Error

Note: Never ever get these files from a stranger as it could be malware. If you don’t have a choice, at least upload them to virustotal and check if it gets detected. 

First, back up your current config folder (just in case) and then replace it with the new folder/files you received. 

This should most probably work because you now have the config files from a tested working client.

Fatally Missing Blocks And Items

Sometimes you may also face the “Fatally missing blocks and items” error when connecting to the Minecraft server. 

This error occurs when your config files do not 100% match the server’s config files, just like the “Fatally missing registry entries” error. 

There are 2 ways to fix this Minecraft issue.

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You can try the same method we used earlier to solve this error as well. Copy the config files from a PC where the game works and replace them in your config folder.

However, if it doesn’t solve the issue, it means the cause is different. The other reason for this error is an OS language-related bug.

Here’s how to fix it: 

How To Fix Fatally Missing Blocks And Items Error

The Minecraft server might have conflicts identifying some characters in your OS character set (language used in the PC).

If your PC is working in a different language other than English-US, try doing this:

  1. Open the Minecraft launcher on your PC.
  2. Click on the installations tab. This will show you the available versions.
  3. Click on the options button (3 dots on the right side) next to your desired version.
  4. Select ‘Edit’ from the menu. This will navigate you to the Edit installation screen.
  5. Click on More options in the bottom right. Now you can see 2 text boxes as Java Executable and JVM arguments.
  6. Add the below line to the end of JVM Arguments. (Copy and paste in the text box) 
-Duser.language = en -Duser.country = US

Make sure not to change other parameters which are already there in the text box. This will force the server to run with English-US as the default language of the launcher.

  1. Click ‘Save’ on the bottom right corner to save the changes.

After these are done the Minecraft server should launch without the “Fatally missing blocks and items” error.

Bottom Line

These “fatally missing” errors can be super frustrating, especially if you don’t know how to fix them. 

Follow the steps outlined in the article and you’ll be playing Minecraft again in minutes! Hope this guide helped you to fix these annoying Minecraft errors.