1924051 - Firefox for Android Fails to Redirect Microsoft Teams Meeting Links to Mobile App

Status: RESOLVED FIXED

(Fenix :: App Links, defect)

Description

[16tdmabsi]

User Agent: Mozilla/5.0 (Android 13; Mobile; rv:132.0) Gecko/132.0 Firefox/132.0

Steps to reproduce:

When attempting to open a Microsoft Teams meeting link (e.g., https://teams.microsoft.com/l/meetup-join/...) in the Android mobile version of Firefox, the browser does not redirect to the Microsoft Teams mobile app as expected. This occurs despite the "Open in apps" option being enabled in Firefox settings.

1. Install Firefox and Microsoft Teams on an Android device.
2. Ensure the "Open in apps" option is enabled in Firefox settings.
3. Open Firefox and navigate to a Microsoft Teams meeting link (https://teams.microsoft.com/l/meetup-join/...).

Actual results:

The link opens in Firefox browser instead of redirecting to the Microsoft Teams app.

Expected results:

Firefox should redirect the user to the Microsoft Teams mobile app.

Comment 1

[BugBot [:suhaib / :marco/ :calixte]]

The severity field is not set for this bug.
:royang, could you have a look please?

For more information, please visit BugBot documentation.

Comment 2

[16tdmabsi]

It is annoying as P0.

Comment 3

[Roger Yang [:royang]]

I'll look into this when I get a chance. Keeping NI so I remember. For now please open menu and tap on the "Open in app" as a workaround. Thanks for reporting this issue.

Comment 4

[16tdmabsi]

(In reply to Roger Yang [:royang] from comment #3)

I'll look into this when I get a chance. Keeping NI so I remember. For now please open menu and tap on the "Open in app" as a workaround. Thanks for reporting this issue.

OK, thank you

Comment 5

[16tdmabsi]

(In reply to Roger Yang [:royang] from comment #3)

I'll look into this when I get a chance. Keeping NI so I remember. For now please open menu and tap on the "Open in app" as a workaround. Thanks for reporting this issue.

Does not work.

https://ibb.co/86fkg4G

Comment 6

[Roger Yang [:royang]]

Oh that's weird. Maybe that's why it didn't redirect. Android OS didn't tell us that the link can be open in Microsoft Team's app for some reason. I'll have to look into that but we ask Android OS if any app wants to open the current link and for some reason the link your on Microsoft team app did not register to open it.

Comment 7

[Roger Yang [:royang]]

Attachment: Does-Not-Work.jpg

attach image from originator.

Comment 8

[Roger Yang [:royang]]

Investigation result shows that Microsoft team site uses a subframe to trigger the redirect to their application. This is blocked in our implementation to prevent spam/abuse. However, this this a important use case, I'll have to add an allow list to support this particular use case.

Comment 9

[Roger Yang [:royang]]

Attachment: Bug 1924051 - Allow Microsoft Teams to trigger applinks in subframes.

Comment 10

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/181a1b32436c
Allow Microsoft Teams to trigger applinks in subframes. r=android-reviewers,petru

Comment 11

[Sandor Molnar[:smolnar]]

https://hg.mozilla.org/mozilla-central/rev/181a1b32436c