ModsFinder

Network Protocol Disconnect

by mobilelize

Players who keep getting kicked from modded or unstable servers can use Network Protocol Disconnect, which stops the client from closing its connection over invalid packets.

FabricNeoForgeQuiltClient-side onlyMIT LicenseOpen source1.20.5 – 26.3

What it does

Starting with Minecraft 1.20.5, a server that sends any malformed data in a packet causes an immediate client disconnect. The mod overrides that default so the game keeps running when such packets arrive. Problems are still written to the log for later examination, so nothing is hidden from anyone who wants to debug a connection.

Network protocol errors can also come from other mods, conflicting configurations or unusual network conditions, not only from the server. The mod prevents the network protocol error screen from appearing, so forced disconnects are stopped whatever the source. It is a client-side mod, so only the player's game needs it and servers run without it. It is open source under the MIT License and is published for Fabric, NeoForge and Quilt, covering 1.20.5 – 26.3 with 19 release versions.

The description warns that keeping the connection open can also keep a client attached to servers that send faulty or malicious packets. Use it with care on untrusted or unknown servers, and prefer reputable ones.

Key features

  1. Ignores invalid packets

    Malformed data in server packets no longer causes the client to disconnect and the session continues.

  2. Blocks protocol error screen

    The network protocol error screen never appears, including when another mod triggers it.

  3. Logs issues

    Packet problems are still recorded in the log so they can be examined for debugging.

  4. Client-only install

    Only the player's client runs the mod, so server owners do not need to add it.

Compatibility

Latest build for each game version and loader.

26.x5 of 5 versions with builds
26.32.0.0+26.12.0.0+26.1Not available
26.22.0.0+26.12.0.0+26.1Not available
26.1.22.0.0+26.12.0.0+26.1Not available
26.1.12.0.0+26.12.0.0+26.1Not available
26.12.0.0+26.12.0.0+26.1Not available
1.21.x12 of 12 versions with builds
1.21.112.0.0+1.21.22.0.0+1.21.92.0.0+1.21.2
1.21.102.0.0+1.21.22.0.0+1.21.92.0.0+1.21.2
1.21.92.0.0+1.21.22.0.0+1.21.92.0.0+1.21.2
1.21.82.0.0+1.21.22.0.0+1.212.0.0+1.21.2
1.21.72.0.0+1.21.22.0.0+1.212.0.0+1.21.2
1.21.62.0.0+1.21.22.0.0+1.212.0.0+1.21.2
1.21.52.0.0+1.21.22.0.0+1.212.0.0+1.21.2
1.21.42.0.0+1.21.22.0.0+1.212.0.0+1.21.2
1.21.32.0.0+1.21.22.0.0+1.212.0.0+1.21.2
1.21.22.0.0+1.21.22.0.0+1.212.0.0+1.21.2
1.21.12.0.0+1.21.22.0.0+1.212.0.0+1.21.2
1.212.0.0+1.21.22.0.0+1.212.0.0+1.21.2
1.20.x2 of 2 versions with builds
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

Use cases

Unstable modded servers

Players who see frequent disconnects on servers with imperfect network handling can stay connected.

Conflicting mods

When another mod causes protocol error disconnects, this mod stops those forced disconnects as well.

Who it’s for: Players who are repeatedly disconnected from modded or unstable multiplayer servers, and who accept that a session may stay open to faulty packets.

How it compares

Full comparison

Network Protocol Error is a Fabric-only, client-side mod for 1.21.10 – 1.21.11, open source under the MIT License. Network Blocker covers Fabric, Forge, NeoForge and Quilt for 1.20.1 – 26.3, is client-side only and is open source under the GNU Lesser General Public License v3.0 only. Disconnect Trigger is Fabric-only for 1.20 – 1.21.8, client-side only, and is not open source, with its license reserved to All rights reserved.

ModLoadersGame versionsEnvironmentUpdated
Network Protocol DisconnectFabric, NeoForge and Quilt1.20.5 – 26.3Client-side only2026-07-17
Network Protocol ErrorFabric1.21.10 – 1.21.11Client-side only2025-12-23
Network BlockerFabric, Forge, NeoForge and Quilt1.20.1 – 26.3Client-side only2026-04-18
Disconnect TriggerFabric1.20 – 1.21.8Client-side only2025-09-18

Questions

Does Network Protocol Disconnect need to be installed on the server?

No. It is installed on the player's side alone, so servers need nothing.

Which loaders does Network Protocol Disconnect support?

Fabric, NeoForge and Quilt. Builds for 26.3 are published for Fabric and NeoForge, and the latest Quilt file targets 1.21.11.

Are packet problems kept for later?

Yes. The mod ignores them for gameplay, but they are still written to the log so a player can trace them afterward.

In the catalog

Network Protocol Disconnect is one of 36,990 Utility mods on ModsFinder, and one of 25,772 Utility mods for Fabric. 8,071 mods support Minecraft 26.3.

Utility mods36,990Fabric modsMods for 26.38,071

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What the author says

Network Protocol Disconnect is a mod designed to enhance your multiplayer experience by preventing automatic disconnections caused by invalid server packets in Minecraft. In Minecraft 1.20.5, Mojang introduced a change where any invalid data in packets sent from a server would result in an immediate client…
mobilelize, on the Modrinth page

Official listing

Owner
mobilelize
Published
2024-09-14
Updated on Modrinth
2026-07-17
Facts verified
2026-10-15

Tags

Utility
Open on ModrinthCompare