How To Install Forge and Optifine for Minecraft 1.17.1

Wheat Field in Minecraft with Biomes O' Plenty

In this post, I will to show you how to install Forge and Optifine for Minecraft 1.17.1! By doing so, you can use mods and shaders together in the latest version of Minecraft.

How To Get Started

First up, you want to open the Minecraft Launcher. If you haven’t already, you may need to log in before you can play Minecraft. The first thing you want to do is select Minecraft 1.17.1 from the list of profiles. What this does, is download and install Minecraft 1.17.1 to your pc, which is required if you want to install Forge for Minecraft 1.17.1.

Once you’ve selected Minecraft 1.17.1, click Play and wait for the game to launch. Once you’ve made it to the main menu of the game, you have successfully installed Minecraft 1.17.1.

Download and Install Forge for Minecraft 1.17.1

The next step is to download 📦 Forge Mod loader. Once on this page, click Installer and wait for the timer in the top right corner to count down to 0. Now you will be able to click SKIP and proceed to download the Forge 1.17.1 Installer.

Once this file finishes downloading, you want to try and open it using Java Platform SE binary. For most people this will be selected by default and the installer will just open. If the file does not want to open, we need to fix Java issues. Try downloading the first program called Jarfix. Upon opening this program, it will try to fix .jar files not being opened with Java by default.

If it tells you, “The .jar suffix was registered successfully” you can now open the Forge installer. If it tells you something like “You need to install Java”, do not use the link in the window, use the link below instead. The link in the Jarfix window does not work.

📦 Java and Jarfix (to fix jar files):
Jarfix 3.0.0:

After fixing Java issues with Forge installer, you can now open the installer and click Install, and it will start installing Forge. Once that’s done, open your Minecraft Launcher again. If the Forge installation was successful, you should now see a new Forge profile in the launcher.

Download Optifine for Minecraft 1.17.1

Now it is time to download Optifine for Minecraft 1.17.1 and add it to the mods folder. First up, download optifine 1.17.1 from the link below.

📦 Download 1.17.1 Optifine:
Optifine 1.17.1 :

Once you’re on the download page, click Download and you will get another .jar file. This time around, don’t open it. After the download is complete, navigate to your search bar and type %appdata% and hit Enter or click search. Doing so should open up a folder with a bunch of other folders in it. Find the folder called .minecraft and open it, this folder is usually at the top of the list. Once in this folder, right click and select Create new folder and call it mods (all lowercase).

If you’ve installed mods before, this folder might already exist. In this case, you want to either back up its contents and then clear all files from the folder, or rename the folder to something like mods – old. Forge will only look for the folder called mods when loading Minecraft with mods. Once you’ve created the mods folder, drag in all mods you want in Minecraft, including Optifine.jar.

You’re done!

That’s it! You can now go back in to your Minecraft Launcher, launch the Forge profile (NOT the Optifine profile!) and wait for it to start. Once you’ve made it to the main menu, you should now see a button called Mods which lets you check all mods you’ve installed. Optifine will not show up in the Mods tab. To check whether it was loaded properly, go to Video Settings and check for a piece of text in the bottom left corner. It should say Optifine 1.17.1 and some more information about the exact version. This means the installation was successful!

That’s how you install Forge and Optifine! Create a new single player world to see your mods in action with Optifine and shaders. Please note: worlds in which mods you use mods will not be playable without mods afterwards! Do NOT open any of your vanilla Minecraft worlds with mods, as this may break the worlds.

🌞 BSL Shaders:
BSL Shaders download:

All you need to do now, is download and import shaders into your game. Simply download the shaders and leave them in .zip format. Add them to the .minecraft/shaderpacks/ folder and select them in the shaders menu. That’s all, you’re now using shaders with your mods! If you need some more shaders, check out this post with the best shaders for Minecraft 1.17.1.

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