отлично работает!

It does literally what it says: fake user agent to bypass Microsoft intentional block (there're other add-ons that purportedly do that, but this one works out of the box and does not require a video tutorial). Don't expect it to fix Teams bugs or accomplish world peace.
Also, you may need to restart Firefox after installing the add-on (it wasn't functional for me until I did, and it even crashed Firefox).
By the way, the
official Teams for Linux Client mentioned has been long abandoned by Microsoft.

Calls work with video and sound on mac.

Tested the camera in meetings with the DEB version on Ubuntu 22.04.1

Solve my issue on Firefox Windows 11

Solved the problem perfectly

I love you man.

Works perfectly on Windows with Firefox Dev Edition

Works for group calls.
Screen sharing doesn't work, but that is expected anyways.

Super add-on!

It's like the Zoom Redirector add-on but for Microsoft Teams. Clearly we'd all be better off using free / open source software for online meetings, such as Jitsi Meet, and non-free JavaScript is problematic. However, not everyone are prepared to or able to boycott any meeting because it's using Teams.

Shame on Microsoft and Zoom for using dark patterns to bully people into installing their spyware, and equally many thanks to the developer of this add-on for helping Firefox users attend these meetings in their favourite browser instead.

Works well, including video and shared screen. Thanks.

Hat instant unter Windows 10 und auch unter Linux funktioniert - DANKE ich muss nicht diesen Chrome Mist und auch nicht die App installieren! :)

Thanks.
In Windows and FF 75 audio works. I don't have a camera, so I can't comment video.

Nice!

This worked perfectly thanks - now need to open up edge just to use Teams.

It works fine for me. Thank you a lot for this extension!

A few questions:
* Does it suppose to enable the video as well? So far my team mates could not see my camera and I could not see my team mate’s camera. I am using Firefox 60ESR.
* Does the user agent faking apply to all tabs/windows or only to the tabs with MS Teams?

Thanks in advance.

Works perfectly well for me

Used with Firefox 74.0 – on FreeBSD-CURRENT, to which Microsoft Teams is not ported.

The extension's preset string for Chrome 79 is effective.

This (custom) string from an installed version of Edge did not have the required effect:

Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.102 Safari/537.36 Edge/18.18363

This terse string was good for 'Meet now' but not for 'Start a new conversation' (it was necessary to click the Format button to get the I-beam pointer):

Chrome/79.0

– this, no good for Meet now:

Mozilla/5.0 AppleWebKit/537.36 Chrome/79.0.3945.74 Safari/537.36

– these, conversations invisible:

Chrome/79.0.3945.130 Edge/79.0.3945.130

AppleWebKit/537.36 Chrome/79.0.3945.130 Safari/537.36 Edge/79.0.3945.130

Mozilla/5.0 AppleWebKit/537.36 Chrome/79.0 Safari/537.36 Edge/79.0

Mozilla/5.0 AppleWebKit/537.36 Chrome/79.0.3945.130 Safari/537.36 Edge/79.0.3945.130