warningConnection ErrorsAffects: Forge/NeoForge
How to Fix Failed to Synchronize Registry Data
Fix Failed to Synchronize Registry Data by matching your client mods exactly to the server's mod list.
Quick Fix
Install the exact same mods and versions that the server uses.
Error Message
Failed to synchronize registry data from serverHow to Fix
1
Get the server's mod list and match your client exactly
2
Use the server's provided modpack if available
3
Check the log for specific missing registries
Common Causes
- Client missing mods that the server requires
- Mod version mismatch between client and server
- Registry ID mismatch
Diagnostic Steps
- Read the error for which registries are mismatched
- Install or update the required mods
- Ensure versions match exactly
- Reconnect
FAQ
What is registry data?
Registries track all blocks, items, and entities. Client and server must agree on what is registered for the game to work.