Microsoft Teams Mac OS client is not recognizing external cameras after updating to version 1.3.00.18164.

Anonymous
2020-07-24T04:03:58+00:00

Microsoft Teams Mac OS client stop recognizing external cameras (EOS Webcam utility, EpocCam, NDI client) after updating to version 1.3.00.18164; only MacBook Pro built-in camera is listed as available device.

※Update executed today (07/23) some hours ago.

Web app through browser (Edge) is OK, it kept external cameras listing and they work.

Does anybody had came across same issue after updating?

OS: macOS Catalina version 10.15.6

Microsoft Teams version: 1.3.00.18164

Microsoft Teams | Microsoft Teams for business | Teams for Mac

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Anonymous
2020-07-29T21:10:25+00:00

I had the exact same thing happen to me after updating to the latest version of teams.  However, I was able to come up with a solution that resolves the issue entirely.  It has to do with how Apple is starting to codesign specific apps to block 3rd party CoreMediaIO plugins.  If we remove that codesigning, then it will allow those 3rd party plugins to function again.

The fix is pretty simple.  First, completely exit out of Teams, then open Terminal and issue the following commands:

If you havent installed xcode previously, first run:

xcode-select --install

Then, run:

sudo codesign --remove-signature "/Applications/Microsoft Teams.app"

and:

sudo codesign --remove-signature "/Applications/Microsoft Teams.app/Contents/Frameworks/Microsoft Teams Helper.app"

Once you've issued those commands, open up Teams.  It should ask you for an administrator password to allow the (now) unsigned application to access your keychain.  Once entering your password and selecting, "Always Allow", the issue should be resolved. (At least until the next update to teams is released).

*****UPDATE*****

As of version 1.3.00.28778 the process has changed and the above workaround is no longer valid.  In order to get this fix working on the latest version of Teams, additional commands will need to be entered.  Keep in mind, these commands are relative to where you have Teams installed, so if it is in a different location, you'll need to adjust the file path accordingly.  So as it stands currently here are all of the commands (must be entered one by one and not pasted in one big block) that will need to be entered:

xcode-select --install (only if you haven't already)

sudo codesign --remove-signature "/Applications/Microsoft Teams.app"

sudo codesign --remove-signature "/Applications/Microsoft Teams.app/Contents/Frameworks/Microsoft Teams Helper.app"

sudo codesign --remove-signature "/Applications/Microsoft Teams.app/Contents/Frameworks/Microsoft Teams Helper (GPU).app"

sudo codesign --remove-signature "/Applications/Microsoft Teams.app/Contents/Frameworks/Microsoft Teams Helper (Plugin).app"

sudo codesign --remove-signature "/Applications/Microsoft Teams.app/Contents/Frameworks/Microsoft Teams Helper (Renderer).app"

******UPDATE #2******

I totally forgot about this thread and decided to take a look at it again. From the latest comments, it looks like a lot of you are already aware that this issue has officially officially fixed by Microsoft as of version 1.4.00.8872, so this workaround should no longer be required as long as you are up to date.

Source: https://docs.microsoft.com/en-us/microsoftteams/troubleshoot/teams-on-mac/virtual-camera-doesnt-work-macos

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  1. Anonymous
    2021-03-30T19:50:59+00:00

    Has anyone been successful at connecting the Logitech BRIO camera? I see the camera in MS Teams but the image is out of focus.

    Thanks!

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  2. Anonymous
    2021-03-30T13:52:29+00:00

    Okay, so you say Iriun Webcam is working again when disabling SIP completely? That would indeed solve my problem, since I only use Iriun.

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  3. Anonymous
    2021-03-30T13:42:57+00:00

    Thanks so much!!

    It's working again :)

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  4. Anonymous
    2021-03-30T13:04:06+00:00

    I can confirm that on two Macs with the virtual camera from OBS Studio 26.1 with Teams 1.4.00.7175. To make things really confusing: I can select the virtual camera and I still see its picture in my preview, but for others it seems as I have the camera disabled.

    And that's not all: My NDI virtual camera works quite well with the output from OBS Studio with the NDI Plugin. And also does EpocCam and Iriun. Who can confirm other virtual cams as working or not?

    This is so badly messed up, come on Teams-Team, you can do better. Other conferencing software fixed the whole issue within days (like Zoom) or even in advance (as Chrome). Teams is stuck with non working virtual cameras for nearly a year now.

    BTW: I tried greghiggins3's method and disabling the whole System Integrity Protection (SIP) in macOS as described in this article (in German): https://www.heise.de/mac-and-i/tipps/System-Integrity-Protection-SIP-in-macOS-deaktivieren-3946690.html (short version: reboot to recovery, open a terminal, type in csrutil disable and reboot to normal operating mode). Both methods show the same behavior: NDI virtual camera, EpocCam and Iriun work, OBS Studio 26.1 built-in virtual camera doesn't send any picture, but shows a correct preview.

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