Lunar Client Jar 1201 (2026)

Keep between 8 and 12 chunks for optimal balance.

Minecraft 1.20.1 updated the folder and file naming conventions for resource packs. Ensure your custom resource pack is explicitly built for version 1.20+. Packs designed for 1.8.9 or 1.12.2 will break textures or throw missing texture errors. Low FPS Despite the Client

java -cp lunarclient-1201.jar -Djava.library.path=natives com.moonsworth.lunar.Launcher lunar client jar 1201

java -Xmx4G -Xms4G -Djava.library.path=.lunarclient/offline/multiver/natives -cp ".lunarclient/offline/multiver/*"com.mojang.authlib.GameProfile [...] Use code with caution.

I can provide custom JVM arguments or troubleshooting steps tailored exactly to your system. Share public link Keep between 8 and 12 chunks for optimal balance

If your 1.20.1 instance fails to launch, it is usually a Java or directory corruption issue. Fix this by clicking the arrow next to the launch button and selecting . This forces Lunar to re-download the clean 1.20.1 JAR files. 2. Low FPS despite Optimization

In the settings, you can often find an option to "Change Version" or "Clear Cache." Doing this forces the launcher to re-download the 1.20.1 JAR, fixing any corruption. Packs designed for 1

In the launcher settings, select 1.20.1 from the version dropdown menu and click "Launch".

For those who want to access these files for technical tinkering, like creating custom mod overrides, the official Lunar Client support page provides the exact location:

Click the gear icon next to the play button or use the folder icon in the mods menu. Overrides Folder: