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Date:      Fri, 8 May 2020 00:28:37 +0200
From:      Maciej Suszko <>
To:        =?UTF-8?Q?Henrik_Lidstr=c3=b6m?= <>,, Jerry <>
Subject:   Re: Microsoft Teams for Linux
Message-ID:  <>
In-Reply-To: <>
References:  <> <> <> <>

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On 5/7/20 10:01 AM, Henrik Lidstr=C3=B6m wrote:
> On 2020-05-06 09:40, Maciej Suszko wrote:
>> On 5/5/20 3:36 PM, Jerry wrote:
>>> On Tue, 5 May 2020 14:52:01 +0200, Maciej Suszko commented:
>>>> Hi,
>>>> I'm wondering if anyone tried to use Microsoft Temas either web vers=
>>>> or desktop app... Web version does work but making audio/video call
>>>> isn't officialy suppported, so you need to spoof user-agent to make =
>>>> partially working - but from time to time MS change something and it=

>>>> just stop working. In the past weeks I was able to make audio calls,=

>>>> now it's not possible (neither Firefox nor Chrome)
>>>> I tested my webcam and mic on and it'=
>>>> all working, so problematic is the web application from MS.
>>>> Desktop application - here are two options, one for Linux, one for
>>>> Windows. I tried to run the Linux version using linuxulator,
>>>> brandelf-ing all the binaries but with no success...
>>>> #v+
>>>> tlhscd@arsenic:/tmp/teams/share/teams $ ./teams
>>>> Trace/BPT trap (core dumped)
>>>> #v-
>>>> How do you think - are there any chances to make the desktop app
>>>> working in out FreeBSD desktops?
>>> I assume you are referring to "Microsoft Teams". Have you tried posti=
>>> your question here:
>>> <
>> No, I haven't but I'll take a look on that. I prefer using Firefox ove=
>> Chrome, but following this:
>> it's unsupported on making video/audio call - that's not the full trut=
>> Web behavior depends on User-Agent beeing sent - spoofing it gives the=

>> possibility to make audio call, but that just stopped working in my
>> case... I can't make audio call neither on Chrome nor on Firefox, so I=

>> suspect it's some MS change.
>>> According to <
>>> Microsoft Teams is now available on desktop and mobile operating
>>> systems including Windows, Mac, Android, iOS and web platforms.
>>> According to this URL:, MS=

>>> Teams is available for Linux. Of course, that is a far cry from
>>> FreeBSD, so YMMV.
>> True, desktop app is the preferred method using Teams, unfortunately
>> there is no FreeBSD build and I suppose there won't be any... It would=

>> be nice to have it running using our Linux emulation layer - I can hel=
>> to test it if anyone is interested.
>>> Report back with your findings. I would be interested in the usabilit=
>>> of this application on FreeBSD.
>> I'll do my best, Office365 and it's community is still growing
>> particulary nowadays, in covid-19 times. Many companies use O365
>> platform, which Teams is a part of.
> Hello!
> I still have "half" working Teams in Firefox (76.0,1) with this UA:
> "Mozilla/5.0 (Windows NT 10.0) AppleWebKit/537.36 (KHTML, like Gecko)
> Chrome/79.0.3945.79 Safari/537.36" using the plugin "user-agent switche=
> As you say, I only get audio and no video (neither my collegues can see=

> me, or I can see them). If I enable camera my audio stops working.
> However, when $company has had these big presentations using teams,
> video works for some reason (but then I'm not allowed audio, so I guess=

> its in the way the meeting is set up).

Thanks Henrik,

I'll test this UA in a few hours - I used "Teams Phone Fix" addon to
Firefox, but it suddenly stopped working. Microsoft deploys its apps
partially - I can have some version, the person sitting next to me - the
other... and of course - they can work differently :)
Got the "User Agent Switcher" as well, beacuse O365 webmail looks like
the old Squirrelmail using the original Firefox UA (I suspect they have
some expressions looking for Mac, Linux and Windows - FreeBSD is out of
the league).

The easiest way to confirm web rendering depends on UA is to observe
Cam, Mic and "Download App" icons - one time they are grey, the other
both are active or one only :)

On Windows there is an option to make a Test Call within the Settings
menu - I haven't seen that on "spoofed" browser yet.

regards, Maciej Suszko.


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