No matter which way I try booting the game, it gets past the 343 logo then closes and opens the Microsoft Store app page.
Tried running from start menu, from search bar, from Xbox Companion App, as administrator and getting the same result every time.
Reminds me of the early months of Windows 10 when everything would just crash when trying to start up.
Edit: reinstall worked, but it keeps freezing in menus now.