Nyf's Modpack Version Check
by Nyfaria
With Nyf's Modpack Version Check, server owners can stop players on a mismatched modpack from connecting to their server.
What it does
The mod compares a modpack version string on the client against the version set on the server, and refuses the connection when the two differ. A server screen appears to tell the player why the join was blocked. The check lives in a config file, so the version can be changed whenever a new modpack release is made.
Setup uses a single config file named nmpvc-common.toml, found in the config folder of the game instance. Its version entry is set to the version number of the modpack, and the file is saved. The mod has to be included in the modpack on both the client and the server, and the version number must be changed every time the modpack is updated, or players on old builds will still be let in or wrongly blocked.
The mod is client and server, so it must be installed on both sides. It is released under All rights reserved and is not open source. Files exist for Fabric and Forge, with 1.0.2 for 1.20.1 as the latest file for each loader, published on 2023-11-28. The first release came out on 2023-09-11.
Key features
Join refused on mismatch
A player whose modpack string differs from the server's is turned away before the game session starts.
Explanation screen
A screen shown during the blocked join tells the player that the modpack build does not match, so they can correct it.
Version stored in a config file
The expected build string lives in nmpvc-common.toml, where the server owner edits it to match each release.
Modpack-wide install
The mod must be part of the modpack on both the client and the server for the check to take effect.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Keeping a modpack group together
A group that publishes its own modpack can use the check to keep players on the current release only.
Updating a modpack release
Each new build of a modpack needs its version number changed in the config file before it goes live on the server.
Who it’s for: The mod suits server owners who distribute a custom modpack and want to keep players on the matching build. Players only need it when it is part of the modpack they install.
Questions
Does Nyf's Modpack Version Check have to be installed on the client?
Which loaders does Nyf's Modpack Version Check support?
Where is the version set on the server?
In the catalog
Nyf's Modpack Version Check is one of 8,016 Management mods on ModsFinder, and one of 5,930 Management mods for Fabric. 34,764 mods support Minecraft 1.20.1.
More from Nyfaria
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What the author says
This mod adds a Config File to control the version of your modpack and prevent connection to servers with the wrong Modpack Version. How to use: 1. Find your modpacks Config Folder. 2. Open the config file called nmpvc-common.toml in your favorite text editor. 3. Change the version number "1.0.0" in modpack-versions…
Official listing
- Modrinth page
- modrinth.com/mod/nyfs-modpack-version-checker
- Owner
- Nyfaria
- Published
- 2023-09-11
- Updated on Modrinth
- 2023-11-28
- Facts verified
- 2026-10-15