How to Fix “Cannot Find Minecraft 1.20” in OptiFine

With the recent release of OptiFine 1.20, some players have encountered an error message saying “Cannot find Minecraft 1.20” when trying to install OptiFine. In this guide, we’ll walk you through the steps to fix this issue.

How to Fix "Cannot Find Minecraft 1.20" in OptiFine

OptiFine is a powerful mod that enhances your Minecraft gameplay. OptiFine provides a range of features, such as FPS boost, lag reduction, smoother gameplay, and support for HD textures, shaders, dynamic lights, and variable render distance. It also offers various performance optimization options like VSync and Advanced OpenGL.

Moreover, OptiFine allows you to control fog, mipmaps, anisotropic filtering, and antialiasing. It improves visual aspects like grass, snow, and water clarity, custom sky textures, random mobs, connected textures, and natural textures.

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What Causes the “Cannot Find Minecraft 1.20” Error in OptiFine?

Here are the causes of the “Cannot find Minecraft 1.20” error:

  1. Minecraft Version Mismatch: OptiFine releases updates that correspond to specific versions of Minecraft. If you haven’t updated Minecraft to version 1.20 before trying to install OptiFine 1.20, the error will occur. It’s crucial to ensure that your Minecraft version matches the version of OptiFine you are trying to install.
  2. Incorrect Installation Order: Sometimes, users try to install OptiFine before updating Minecraft to the required version. OptiFine relies on specific Minecraft files, so if those files are missing or outdated, the error may occur. To avoid this, ensure you update Minecraft to version 1.20 before installing OptiFine.
  3. Corrupted OptiFine Files: In rare cases, the OptiFine files you downloaded may be corrupted or incomplete. This can happen due to network issues during the download process. If you encounter the error consistently, try redownloading the OptiFine files from the official website to eliminate the possibility of corrupted files.

How to Fix “Cannot Find Minecraft 1.20” in OptiFine

Step 1: Update and Launch Minecraft 1.20

Update and launch Minecraft 1.20.
Update and launch Minecraft 1.20..

The first step to fixing the “Cannot find Minecraft 1.20” error is to update and launch Minecraft 1.20. Follow these steps:

  1. Open the Minecraft Launcher.
  2. Look for the latest release, which is Minecraft 1.20, and select it to update the game.
  3. Click on the “Play” button to launch Minecraft 1.20.

Step 2: Download OptiFine

Once you have successfully updated and launched Minecraft 1.20, it’s time to download OptiFine. Here’s how you can do it:

  1. Go to the official OptiFine website at
  2. On the website, navigate to the Minecraft 1.20 section. You can find it under “Preview versions.”
  3. Look for the download link and click on it.
  4. You may encounter an advertisement page. Simply skip the ad to proceed with the download.
  5. Once the download starts, wait for it to complete.

Step 3: Install OptiFine

Install OptiFine.
Install OptiFine.

Now that you have the OptiFine file, you need to install it on your system. Follow these steps:

  1. Locate the downloaded OptiFine file. It will have a “.jar” extension.
  2. Double-click on the OptiFine file to run it.
  3. A window will appear with installation options. Select the “Install” button to begin the installation process.
  4. Wait for the installation to complete. This may take a few moments.

Step 4: Launch OptiFine in Minecraft

With OptiFine successfully installed, you can now launch it in Minecraft. Here’s how you can do it:

  1. Launch the Minecraft Launcher.
  2. In the Minecraft Launcher window, locate and click on the version dropdown box.
  3. From the dropdown menu, select “OptiFine” as the desired version.
  4. After selecting OptiFine, click on the “Play” button to start Minecraft with OptiFine.

Troubleshooting Tips:

If you encounter an error message stating “cannot find Minecraft 1.20” while attempting to download OptiFine, try the following:

  1. Make sure you have updated Minecraft to version 1.20 and launched it at least once before attempting to download OptiFine.
  2. If you can’t find “OptiFine” in the Minecraft Launcher, follow these steps:
    • Select the “Installations” tab in the Minecraft Launcher.
    • Look for the OptiFine installation and click on the “Play” button next to it.
    • This will launch Minecraft with OptiFine.


OptiFine is a fantastic mod that enhances your Minecraft experience, and with the recent release of OptiFine 1.20, it’s natural to want to install it. By following the steps outlined in this guide, you can easily fix the “Cannot find Minecraft 1.20” error in OptiFine.

Remember to update and launch Minecraft 1.20 first, then download OptiFine from the official website, and finally install and launch it in Minecraft. With OptiFine successfully installed, you’ll be able to enjoy improved visuals and smoother gameplay in Minecraft 1.20 and beyond.


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