With it you can expect a better-performing PC experience along with better and more immersive graphics. Among this patch’s new features include a boost to the frame-rate, dynamic lighting, HD texture support, variable render distances, fog control, and so on. 

Need to know how to install the OptiFine patch for your game? This guide will give you step-by-step instructions. 

How to Install OptiFine Patch 1.12.1 for Minecraft

The Simple Way (For OptiFine 1.6.2_C4 and newer)

Double-click the downloaded JAR file to start the OptiFine installer

Click “Install” OptiFine should get installed in the official Minecraft launcher with its own profile, “OptiFine” Start the official launcher and play!

The Complex Way (All OptiFine Versions) 

If the above method doesn’t work for you, or you’re running a version of OptiFine that’s too old to be compatible with the instructions above, here’s another way you can get it up and running in your Minecraft game.

Use the  official launcher to download and start Minecraft 1. 6. 2. Go to the Minecraft base folder (shown in the official launcher when you click “Edit Profile” and “Game Directory”) Go to the “Versions” subfolder Rename the “1. 6. 2” folder to “1. 6. 2_OptiFine” Go into “1. 6. 2_OptiFine” subfolder Rename “1. 6. 2. jar” to “1. 6. 2_OptiFine. jar” Rename “1. 6. 2. json” to “1. 6. 2_OptiFine. json” Open the file “1. 6. 2_OptiFine. json” with a text editor Replace “id”:“1. 6. 2” with “id”:“1. 6. 2_OptiFine” Save the file Copy the files from the OptiFine ZIP file in “1. 6. 2_OptiFine. jar” as usual Remove the META-INF folder from “1. 6. 2_OptiFine. jar”. Start the official launcher Click “Edit Profile” Select “Use version: release 1. 6. 2_OptiFine” Click “Save Profile” Click “Play” or “Login” to start the game.

If only “Play Offline” is available, then log out and log in again to fix it.

Installing OptiFine to Minecraft with Forge

There is a slightly different process for those of you attempting to install the OptiFine 1.12.1 update if you’ve got Minecraft with Forge installed. It goes like this:

Use the official launcher to download and start Minecraft 1. 6. 2 Use the Forge installer to install Forge Go to the Minecraft base folder Go to “Versions” subfolder Go to subfolder “Forge9. 10. X. Y” Copy the files from the OptiFine ZIP file to “Forge9. 10. X. Y. jar” Remove the META-INF folder from “Forge9. 10. X. Y. jar” Start the official launcher Select profile “Forge” Click “Edit Profile” Select the checkbox “JVM Arguments” In the field next to it, add: “-Dfml. ignoreInvalidMinecraftCertificates=true -Dfml. ignorePatchDiscrepancies=true” Click “Save Profile” Click “Play” or “Login” to start the game.

If only “Play Offline” is available, then log out and log in again to fix it.


That’s all there is to it! Some of you may have a more difficult time getting this OptiFine patch into your game, but one of the methods listed above should work for you. If you need to download the update for yourself to test these out, you can do so from the main OptiFine forum thread. 

Got other issues you can’t figure out? Check out the rest of our Minecraft guides for more tips and fixes!

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