[imtringued]

Not on ARM. There you only have a choice between Microsoft store apps or emulated x86 applications. You're not going to use Firefox on Windows on ARM unless you download the x86 version which will perform very poorly.

[jackbrookes]

No, you can run native ARM apps sourced from outside the windows store.

[whywhywhywhy]

Not true here is the download to the exe for Windows Firefox ARM build. Took me 10 seconds to Google it....

https://download-installer.cdn.mozilla.net/pub/firefox/relea...