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As of version 1.3.00.28778 the process has changed and the above workaround is no longer valid.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
    2021-06-25T14:22:24+00:00

    When you are on version 1.4.00.11161, where you should be as you can try to install the driver, the workarounds are not needed anymore.

    If you want to check, if your problem is related to the workaround, reinstall the current Version, then don't apply the workaround and try to enable the driver. If this still doesn't work, your problem is not related to the virtual-camera-problem and should be discussed elsewhere. If it works, please leave us a note that this helped, so others can benefit from what you have experienced.

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  2. Anonymous
    2021-06-25T09:41:34+00:00

    I'm currently struggling and unable to install the audio driver that enables sharing my screen with audio on macOS 11.4.

    I am not 100% sure, however I think this has something todo with applying the suggested fix to get my external camera to work.
    I think the fix might be "blocking" the driver install.

    Has anyone else experienced this and maybe know how to get this resolved?

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  3. Anonymous
    2021-06-14T21:06:06+00:00

    Greg thank you SO much for posting the original fix and the update. I'm a marketing director and use Teams constantly for work (primarily on an iMac). Having a high-quality GoPro camera mounted in a ring light really ups my video conference game but the 3rd party camera functionality keeps breaking. Yours is the only effective fix that I've found!

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  4. Anonymous
    2021-05-27T03:35:04+00:00

    Indeed!

    But, to Greg: I'm sure you're well aware of how helpful your fix has been, but in case not, it's been helpful. TREMENDOUSLY HELPFUL. I relied heavily on OBS for creating a more elaborate virtual teaching environment for my synchronous classes this past year when teaching. Without your work-around, I would not have been able to deliver lectures and help to students nearly as effectively. Thank you! Your help made the past year of online teaching a little less awful!

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