Multiple instances of Forge/Fabric Can be run at the same time using Essential Installer! Here's how
You'll need Windows, the Minecraft Launcher (https://www.minecraft.net/en-us/store/minecraft-deluxe-collection-pc), and the file at https://ufile.io/56teitql . Credit to @Sk1er!
Start the Minecraft Launcher and initialize Minecraft at least once.
Close the Minecraft Launcher.
Then, start the attached file.
Accept the UAC prompt.
Select Create New Profile.
Name your profile, select Forge/Fabric, and the Minecraft Version.
Ignore the section saying Minecraft Launcher.
Click create.
It'll download a required client from its website. You can't remove the client, it'll automatically patch. When it's done, close the attached file.
Open the Minecraft Launcher. The file should be there, reading as forge or fabric.
Click the file icon and you should see a separate version of .minecraft inside your regular .minecraft!
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