A new Facebook Beta app is in the Microsoft Store on Windows 10. The app is a progressive web app that uses your Edge installation of the Facebook website. Facebook removed its previous app from the Microsoft Store just over one year ago. Facebook removed its app from the Microsoft Store on Windows 10 in March 2020. Now, just over a year later, a new Facebook app has appeared in the Microsoft Store. The new Facebook app is still in beta, and it's different than the previous Facebook app. The new Facebook Beta app is a progressive web app (PWA). Right now, the Facebook Beta app doesn't appear to be different from Facebook's website when opened on any browser. In fact, according to Aggiornamenti Lumia, the PWA uses your Microsoft Edge Chromium installation of the Facebook website.