Java is required to run Minecraft modpacks. The legacy Minecraft launcher open instead of the current one."Failed to install Minecraft launcher" (parsing error)."Failed to install Minecraft launcher" (download error)."Failed to download Minecraft launcher due to a network error"."Failed to create Minecraft directories".Clicking 'Play' in Minecraft's Launcher Doesn't Start the Game (McAfee Real-Time Scanning)."Couldn't load launcher core from." / "Unable to start the Minecraft Runtime Environment"."An unexpected error occurred while trying to install Minecraft"."An access violation occurred when attempting to install Minecraft launcher".The System cannot find the file Specified" error (Windows OS)."Failed to download file" in CurseForge Client / "Error Code 0".Modified on: Mon, 6 Feb, 2023 at 12:54 PM Search the internet for (without quotes) "add environment variable macOS" or "add environment variable Windows" to get guides about how to do this.Support Home CurseForge App Minecraft CurseForge Minecraft Troubleshooting If you want, you can add Minecraft's Java to your PATH environment variable so that you only need to type java -jar path/to/OptiFine_1.XX.X_HD_X_XX.jar. The path to the OptiFine jar file will vary. Windows: "\Program Files (x86)\Minecraft Launcher\runtime\jre-圆4\bin\java.exe" -jar "C:\Users\your user\Downloads\OptiFine_1.14.4_HD_U_F5.jar MacOS: ~/Library/Application\ Support/minecraft/runtime/java-runtime-gamma/mac-os/java-runtime-gamma/jre.bundle/Contents/Home/bin/java -jar /users/your\ user/Downloads/OptiFine_1.14.4_HD_U_F5.jar If you get an error message, ensure your command looks like this: You should see the OptiFine installer window appear. jar file, and drag it on top of the command window. There should be a space between your path and the -, and after the r.įind your OptiFine installer. On Windows, surround the entire path in quotes.Īdd -jar to the path in your command window. On macOS, simply place a backslash ( \)īefore every space in your path, or surround the entire path in quotes. You will need to ensure special characters like spaces are properly escaped. On Windows, this is CMD, and you can find it by searching for "CMD" (without quotes) in the start-menu or taskbarĮnter the path to Java, which you found in Part 1. On macOS, this is Terminal, and you can find it by going to /Applications/Utilities in the FinderĪnd launching Terminal, or by searching for "Terminal" (without quotes) in Spotlight. Open your operating system's command line interface. Using the aforementioned command format, we can run the OptiFine installer using the following steps. Java command, so we will need to use the full path to Minecraft's Java. This is because your computer does not know where to find the Tried this on your computer without Java manually installed, the command will fail. jar files from the command line using the following command format: java -jar path/to/program.jar. Windows 32-bit: \Program Files (x86)\Minecraft Launcher\runtime\jre-x86\bin\java.exe Windows 64-bit: \Program Files (x86)\Minecraft Launcher\runtime\jre-圆4\bin\java.exe MacOS: ~/Library/Application\ Support/minecraft/runtime/java-runtime-gamma/mac-os/java-runtime-gamma/jre.bundle/Contents/Home/bin/java If you installed Minecraft in the default locations, the full path to the Java executable is: Minecraft Launcher\runtime\jre-x86 for 32-bit computers. Inside the Launcher's Program Files folder at Minecraft Launcher\runtime\jre-圆4 for 64-bit computers, and On macOS, the bundled Java runtime is located inside the minecraft/runtime/jre-圆4 folder. On Windows and macOS, Minecraft Java Editionīundles and manages its own Java installation. It involves the command line but the process is very easy. You can install OptiFine without also manually installing Java on macOS or Windows. Linux users must manually install Java to play Minecraft, so this guide does not apply.
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