Whenever I try to install an Android extension, except for the Recommended ones, by pressing “Add to firefox”, I’m prompted to download the .xpi file and when it finishes I press " Open file" but I get an error saying I don’t have any app which can open those files.

Has this happened to anyone else? Does anyone know how to fix it?

I’m on Mull 120.1.0

    • @MrOtherGuy
      3•6 months ago

      This isn’t true anymore. Any extensions that are explictly marked as Android compatible (by the author) should now be installable from AMO. I’m pretty sure that the extension needs to use manifest v3 to be able to be Android compatible, but as long as that is true and the author has set the Android compatibility flag, you should be able to add it normally.

      Installing from AMO seems to work fine for me - although I’m using Nightly variant, which certainly could behave differently. However, Firefox 120 is supposed to work the same I believe.

        • @MrOtherGuy
          1•6 months ago

          Huh. I dunno what the actual requirements for Android compatibility are then. Anyhow, being recommended or in a custom collection isn’t strictly a requirement anymore.