I've recently tried to install the game after deleting it from my PC a while back. I originally bought it back in 2011 and had to migrate my account to a Microsoft account. Now when I try to install and launch the launcher, I get this message:

Minecraft Launcher is currently not available in your account. Make sure you are signed in to the Store and try again. Here’s the error code, in case you need it: 0x803F8001