ModernFix on Minecraft 26.2 to 1.20.1
ModernFix releases started in real Minecraft 26.2, 1.21.1 and 1.20.1 games in the Modkeel lab. It ran in the same game as 7 other mods, among them Lithium, FerriteCore, Entity Culling and Concurrent Chunk Management Engine (Fabric).
Lab data as of October 4, 2026. Mod id modernfix.
Minecraft versions
Mods it ran with
| Mod | 1.21.1 | 1.20.1 |
|---|---|---|
| Lithium | Server | Server |
| FerriteCore | Server | Server |
| Entity Culling | Server | Server |
| Concurrent Chunk Management Engine (Fabric) | – | Server |
| Krypton | Server | Server |
| ScalableLux | Server | – |
| Very Many Players (Fabric) | Server | Server |
World: loaded a world together on a client. Server: started a server together. Bench: ran together in a benchmark. Clash: did not run together. A dash: not tested together yet, which is not a conflict.
Get ModernFix
ModernFix is made by its authors: get it from ModernFix on Modrinth, for your exact Minecraft version and loader. Modkeel does not make or host it.
Adding ModernFix to your pack?
The lab shows how ModernFix did in its own games; your pack is its own mix. The Modkeel Companion, a free mod for Fabric, NeoForge and Forge, copies each world before it loads with different mods; if the game then crashes, it names the mod that most likely caused it and turns that mod off, or goes back to the mods that last worked, in one click.
Crashed already? Paste the crash report to see which mod caused it.
Questions
Does ModernFix work on Minecraft 26.2?
In the Modkeel lab (data as of October 4, 2026), a port of ModernFix that Modkeel built for testing started a server on Minecraft 26.2. It is not an official release: wait for the authors' release for 26.2. In the Modkeel lab (data as of October 4, 2026), ModernFix 5.27.19-build.2 ran in a server benchmark on Minecraft 26.2.
Does ModernFix work on Minecraft 1.21.1?
In the Modkeel lab (data as of October 4, 2026), ModernFix 5.25.1+mc1.21.1 started a server on Minecraft 1.21.1.
Does ModernFix work on Minecraft 1.20.1?
In the Modkeel lab (data as of October 4, 2026), ModernFix 5.25.2+mc1.20.1 started a server on Minecraft 1.20.1.
Does ModernFix work with Concurrent Chunk Management Engine (Fabric)?
In the Modkeel lab, ModernFix and Concurrent Chunk Management Engine (Fabric) started a server together on Minecraft 1.20.1.
Does ModernFix work with Entity Culling?
In the Modkeel lab, ModernFix and Entity Culling started a server together on Minecraft 1.21.1 and 1.20.1.
Does ModernFix work with FerriteCore?
In the Modkeel lab, ModernFix and FerriteCore started a server together on Minecraft 1.21.1 and 1.20.1.
Does ModernFix work with Krypton?
In the Modkeel lab, ModernFix and Krypton started a server together on Minecraft 1.21.1 and 1.20.1.
Does ModernFix work with Lithium?
In the Modkeel lab, ModernFix and Lithium started a server together on Minecraft 1.21.1 and 1.20.1.
Does ModernFix work with ScalableLux?
In the Modkeel lab, ModernFix and ScalableLux started a server together on Minecraft 1.21.1.
Does ModernFix work with Very Many Players (Fabric)?
In the Modkeel lab, ModernFix and Very Many Players (Fabric) started a server together on Minecraft 1.21.1 and 1.20.1.
What if my game crashes after adding ModernFix?
Look at the crash report: it usually names the mod. The Modkeel Companion, a free mod for Fabric, NeoForge and Forge, copies each world before it loads with different mods; if the game then crashes, it names the mod that most likely caused it and turns that mod off, or goes back to the mods that last worked, in one click.
About this data
Loaded a world: a real Minecraft client started with the mod and joined a world. Server started: a real server finished starting with it. Benchmark: it ran through a timed lab scene. Did not start: the game stopped before it was playable.
Each row is one run in the Modkeel lab, matched to the exact file that ran: other files may behave differently. A mod or pair missing here was not tested yet; that is not a conflict. Lab data is CC BY 4.0: attribute "Modkeel lab data (modkeel.com)". Ask the same from an AI assistant with Modkeel's MCP server, or let the Modkeel mod check your own game.