Network Protocol Error
by xKingDark
Network Protocol Error is a Fabric client mod that catches malformed packets from unstable servers and stops the disconnect screen from appearing.
What it does
When a client gets bad packets from a server, the game usually drops the session. This mod is aimed at unstable or misbehaving servers that cause frequent disconnects, and it works on the Fabric loader for 1.21.10 and 1.21.11. Only the client needs it, so players can join a server without the server running anything extra.
The mod is released under the MIT License and is open source, with its source code and issue tracker publicly available. It was first published on 2025-12-23 and has not been updated since.
Key features
Packet error handling
Malformed or unexpected network packets from a server are handled on the client rather than ending the session.
Fewer repeated disconnects
Players who keep getting disconnected by an unreliable server can stay connected while they play on it.
Client-only install
Installing the mod on the client alone is enough, and no server-side files are needed.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Questions
Which loader does Network Protocol Error need?
In the catalog
Network Protocol Error is one of 36,990 Utility mods on ModsFinder, and one of 25,772 Utility mods for Fabric. 19,862 mods support Minecraft 1.21.11.
More from xKingDark
Similar mods
What the author says
"Network Protocol Error" is a disconnection message that you get when the Minecraft: Java Edition client receives malformed or unexpected network packets and forcibly disconnects. This mod was created to mitigate frequent disconnects on unstable or misbehaving servers, making it especially useful in those environments.
Official listing
- Modrinth page
- modrinth.com/mod/network-protocol-error
- Owner
- xKingDark
- Published
- 2025-12-23
- Updated on Modrinth
- 2025-12-23
- Facts verified
- 2026-10-15