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Prism Launcher
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Minecraft 1.20.6 with NeoForge

1 minEntity
Entityprism launcher 1.20.6 neoforge1.20.6 neoforgeprism launcher

Create a Prism instance for Minecraft 1.20.6 on NeoForge. Use Java 21.

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Minecraft
1.20.6
Loader
NeoForge
Java
Java 21

1.20.6 + NeoForge

Add Instance → 1.20.6 → install NeoForge. Assign Java 21 under Settings → Java.

This pairing existed for that version. Older versions are not given NeoForge or Quilt pages.

Installer: /download.

Prism Launcher screenshot showing the mod updating user-interface
Check for and apply mod updates for a whole instance at once.

Frequently asked questions

Which Java for 1.20.6?

Java 21. Mismatch is a common exit code 1.

Get Prism Launcher

Windows, macOS & Linux

Free and open source. Sign in with the Microsoft account that owns Minecraft, then create your first instance.

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Prism Launcher on Windows showing several modpacks and instances