teams.live.com - Firefox is an unsupported browser

[erbkaiser]

URL: https://teams.live.com/

Browser / Version: Firefox 89.0 Operating System: Windows 10 Tested Another Browser: Yes Edge

Problem type: Site is not usable Description: Browser unsupported Steps to Reproduce:

1. Go to https://portal.office.com and log in with my employee credentials
2. Select Microsoft Teams from the left toolbar
3. Get the error message "Hmm. Your browser version isn't supported. Quickest solution? Download the desktop app."

This worked last week.

View the screenshot

Browser Configuration

• None

From webcompat.com with ❤️

[liamengland1]

Can confirm. To reproduce, sign in with a personal (not work or school) MS account and visit teams.live.com.

This seems to be the object defining which browsers should be shown that screen.

supportedBrowsers: {
    chrome: {
      supported: !0,
      minVersion: 60
    },
    chromium: {
      supported: !0,
      minVersion: 60
    },
    edgeChromium: {
      supported: !0,
      minVersion: 60
    },
    edge: {
      supported: !0,
      minVersion: 12
    },
    ie: {
      supported: !0,
      minVersion: 11
    },
    safari: {
      supported: !1,
      minVersion: 11.1
    },
    firefox: {
      supported: !1,
      minVersion: 52
    }
  }

from https://statics.teams.cdn.live.net/hashed/3.1.5-config-life.min-1-0-0-2021060201.js

I spoofed my user-agent to be chrome and nothing was immediately broken.

[karlcow]

So for me the message for downloading disappears quickly but I get instead a sequence of redirections, where the final message is:

[karlcow]

And if I deactivate Tracking Protection I get…

Let me try to restart from the start.

ok after signing out and logging in again I get a slightly different message than the reporter. https://teams.microsoft.com/_#/guestLicense

Note that there is a link to use the web app and this link brings to the page Welcome to Teams.

[karlcow]

Ah but I started with https://teams.live.com/

Let's start with https://portal.office.com/

fun this time going through portal and selecting the icon on the left side I get

I let @softvision-oana-arbuzov @softvision-raul-bucata test that part :)

[softvision-oana-arbuzov]

@karlcow the issue is still reproducible on Firefox Nightly.

And it works on Chrome.

Tested with: Browser / Version: Firefox Nightly 91.0a1 (2021-06-23) Operating System: Windows 10 Pro

[karlcow]

nothing much to do. I know there are discussions going on between Mozilla and Microsoft about Teams, but no ETA in sight.

[benyaminl]

Hello I got problem also on Teams for Uni, the ICON become HUGE..

see this image

That's done homework, but see that the (v) check mark isn't normal... See the docs

Should be on https://support.microsoft.com/en-us/topic/turn-in-an-assignment-in-microsoft-teams-e25f383a-b747-4a0b-b6d5-a2845a52092b

As I don't install edge (I FORCE DELETE EDGE ON WINDOWS, HATE EDGE, LOVE FIREFOX)

[erbkaiser]

As of today 2021-07-12, logging into MS Teams from Firefox is working again for me. Both through portal.office.com and by going to teams.microsoft.com directly.

[karlcow]

Should we close this?

[liamengland1]

still reproducible

firefox is still false in supportedBrowsers: https://statics.teams.cdn.live.net/hashed/3.1.5-config-life.min-1-0-0-2021070937.js

[softvision-raul-bucata]

The issue is still reproducible on my side using the latest build of Firefox Nightly, with and without a clean profile:

Tested with: Browser / Version: Firefox Nightly 93.0a1 (2021-08-13) (64-bit) Operating System: Windows 10 PRO x64

Reopening the issue for investigations

[softvision-raul-bucata]

Reproducible on Android devices as well:

Tested with:

Browser / Version: Firefox Release 104.1.0 (2015898515-🦎104.0-20220816115024🦎 )/ Firefox Nightly 106.0a1 (2015902251-🦎106.0a1-20220904093956🦎)/ Chrome Mobile Version 104.0.5112.102 Operating System: Samsung A51 (Android 11) -1080 × 2400 pixels 20:9 aspect ratio (~405 ppi density) Operating System: Google Pixel 3 (Android 12) -1080 x 2160 pixels, 18:9 ratio (~443 ppi density)

Notes:

1. Reproducible regardless of the status of ETP.
2. Reproducible on the latest build of Firefox Nightly and Release.
3. Works as expected using Chrome.

[inv_36/2022]

[denschub]

Quick update on this issue.

We've been working with Microsoft to get Teams working in Firefox. Teams users using teams.microsoft.com (primarily Business and Enterprise customers on a paid plan, but also some free/personal legacy accounts) should be able to use MS Teams as normal now.

For this specific bug report: There is a second Microsoft Teams instance running on teams.live.com. This is the instance that most Personal/Consumer/Free users of MS Teams are on, and that is currently showing a "browser unsupported" banner for Firefox users.

We're still actively working on this, and will share an update as soon as we have something to share.

[alfredonodo]

For this specific bug report: There is a second Microsoft Teams instance running on teams.live.com. This is the instance that most Personal/Consumer/Free users of MS Teams are on, and that is currently showing a "browser unsupported" banner for Firefox users.

We're still actively working on this, and will share an update as soon as we have something to share.

Any news on this? Thanks

[norru]

Any updates?

[karlcow]

@norru For these long standing web compatibility issues, it is usually better to report bugs to Microsoft directly. If enough people report that a web property is not working with their browser of choices, it will help move the needle. The Webcompat teamS at both Mozilla and Apple are trying in parallel. But the most important is the customers direct ask. Hope it helps a (little) bit, at least to understand. ❤️

[benyaminl]

Hello Karl,

Thank you for heads up, and sorry to meddle in between, the problem is we, user tried to keep sending feedback, but the problem is, they keep ignoring it... 😂

The what option do we, user have? Other than stay at the corner and just sigh... 😂

This also happen to a lot of Office tools like zoom in excel 365 or PowerPoint web.. Where they just plainly ignore us, business and paid/premium user, and straightly point to crEdge.. Which limit our option as user to only use edge.. 😭

If there are any possibility, please do lobby from Microsoft, I'm begging you 🙇‍♂️🙏

Thank you!

Regards, Benyamin Limanto sent from my Sony XPERIA XZ Premium

On Mon, Mar 25, 2024, 06:13 Karl Dubost @.***> wrote:

@norru https://github.com/norru For these long standing web compatibility issues, it is usually better to report bugs to Microsoft directly. If enough people report that a web property is not working with their browser of choices, it will help move the needle. The Webcompat teamS at both Mozilla and Apple are trying in parallel. But the most important is the customers direct ask. Hope it helps a (little) bit, at least to understand. ❤️

— Reply to this email directly, view it on GitHub https://github.com/webcompat/web-bugs/issues/77892#issuecomment-2016982538, or unsubscribe https://github.com/notifications/unsubscribe-auth/AAVP2NFVKPJZX4SLXJJFL2LYZ5M2LAVCNFSM47BNN3VKU5DIOJSWCZC7NNSXTN2JONZXKZKDN5WW2ZLOOQ5TEMBRGY4TQMRVGM4A . You are receiving this because you commented.Message ID: @.***>

[alfredonodo]

Microsoft is releasing its new web client globally and it is scheduled for completion in the first quarter of 2024. For this reason, we hope that the problem can be resolved as soon as possible.