: Ensure the Minecraft game and its launcher are completely closed before starting the installation. 3. Install OptiFine
: You must have run the official Minecraft 1.19.x version at least once through the standard Minecraft Launcher before installing OptiFine. [1.19.x] Download OptiFine HD U I2 pre2
: You need Java 17 or newer installed on your computer to run the .jar installer file. : Ensure the Minecraft game and its launcher
: Right-click the downloaded OptiFine file, select "Open with," and choose Java(TM) Platform SE binary . select "Open with