Extracting the JAR for personal, offline use exists in a grey area. However, distributing the JAR (e.g., re-uploading to a file hosting site) is a direct violation and can result in a DMCA takedown. If you are a network admin or server owner, ensure your players are using the official launcher to avoid security risks to your server's backend.
Download the installer compatible with your operating system (Windows, macOS, or Linux). Step 2: Select Version 1.20.1 Launch the Lunar Client executable. lunar client jar 1201
Here is the reality check. The company behind Lunar (LunarGaming) requires users to use their launcher to verify a paid Lunar+ subscription or a valid Minecraft Microsoft account. Extracting the JAR for personal, offline use exists
The launcher will automatically download the necessary JAR files and libraries into your .lunarclient directory. Locating the JAR Files (Advanced Users) Download the installer compatible with your operating system
