HOW TO INSTALL OPTIFINE FOR ANY VERSION
1.) Open Optifine Installer.msi
If its closing when you open it follow these steps...
1.) Install all Microsoft DLLs required for windows.
2.) Install any native directories you need.
3.) Make sure you have the Minecraft version you want to installed, installed normally first.
2.) Select your version (1.7.10 ->> 1.21.4)
3.) Wait...
4.) Open your Minecraft Launcher.
5.) Click Launch! And enjoy!
Full Changelog: https://github.com/husHedjeaNs20/Optifine/compare/Optifine...Optifine