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Resetting how files open

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  • 最近回覆由 cor-el

jabidleman
jabidleman
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So I don't know the proper way to word this, I guess I'll just ramble until my point gets across. A couple years ago I downloaded Optifine, because I just wanted to experience Minecraft in ultra hyper 4k whatever. I didn't quite understand how to open it to install it or move it into a file or however that's done. I still don't quite understand. In my confusion, I decided it would be a good idea to change the default way the file opened to into Firefox. Now when I double-click to open it, it opens a new firefox window and asks where I want to save the file. My question: how can I change the file back to what it used to be? Apparently it's supposed to be a .jar, but I'm not seeing it anywhere on the file. Alternatively, if reversing the file type isn't an option, does anyone know how I might be able to install it? Please I'm begging T-T

This is what the most current file name is: OptiFine_1.20.1_HD_U_I5

Sidenote I just checked apparently it IS STILL a .jar file, but I don't have a clue what to do with it aaaaaaaaaaaaa

So I don't know the proper way to word this, I guess I'll just ramble until my point gets across. A couple years ago I downloaded Optifine, because I just wanted to experience Minecraft in ultra hyper 4k whatever. I didn't quite understand how to open it to install it or move it into a file or however that's done. I still don't quite understand. In my confusion, I decided it would be a good idea to change the default way the file opened to into Firefox. Now when I double-click to open it, it opens a new firefox window and asks where I want to save the file. My question: how can I change the file back to what it used to be? Apparently it's supposed to be a .jar, but I'm not seeing it anywhere on the file. Alternatively, if reversing the file type isn't an option, does anyone know how I might be able to install it? Please I'm begging T-T This is what the most current file name is: OptiFine_1.20.1_HD_U_I5 Sidenote I just checked apparently it IS STILL a .jar file, but I don't have a clue what to do with it aaaaaaaaaaaaa

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cor-el
cor-el
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You can check specific file extension keys in the registry with the registry editor.

  • HKEY_CLASSES_ROOT\.xxx

You can check possibly linked MIME types in the MIME Database registry key.

  • HKEY_CLASSES_ROOT\MIME\Database\Content Type\

In Firefox, this is stored in handlers.json in the Firefox profile folder.

You can use the button on the "Help -> More Troubleshooting Information" (about:support) page to go to the current Firefox profile folder or use the about:profiles page (Root directory).