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Minecraft | Failed To Synchronize Registry Data From Server

Solutions

Make sure the client is running on the same version of Forge as the Server
The server might be running on 1.12.2 while you are on Forge 1.16.5

Check if the modpacks of the server is the same as the modpack on your client.
The server might be running on a modpack version 1.2.1 while you are running on the 1.2.0 version of modpack.

Only do the 3rd step if above doesn't work.

Removing mods one by one until you are able to connect.
You might be using a mod that is conflicting with some mods, this is a rare case scenario so the two solutions above should work.

All done! You should now be able to connect to your server!
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