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

Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.

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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As of version 1.3.00.28778 the process has changed and the above workaround is no longer valid.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
    2021-05-21T14:26:51+00:00

    you were right about spamming the update button, it's finally come through without having to directly install that link

    conclusion: take "latest update" with a pinch of salt

    cheers for the help

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  2. Anonymous
    2021-05-20T09:08:08+00:00

    I had to start the update process several times with error messages and after some tries it downloaded the whole installer package for the 1.4.00.11161 version. I think it was released on monday, I got it on tuesday.

    I didn't test it, but I found this link for the current installer, which sounds promising: https://statics.teams.cdn.office.net/production-osx/1.4.00.11161/Teams_osx.pkg

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  3. Anonymous
    2021-05-20T08:23:56+00:00

    Do I need to downgrade a version then? Because 1.4.00.8872 appears to be the latest version after it saying update complete 20.05 and I can't seem to get to 1.4.00.11161

    Thanks anyway tho

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  4. Anonymous
    2021-05-20T07:06:55+00:00

    that might be the case.

    I also just recently noticed on the thread that Teams 1.4.00.8872 (which I've just updated to) works apparently without the need of all the workarounds. Unfortunately, despite having just updated to this version, my external cam is still not recognised. Not sure whether it's because I'm using the Panasonic Lumix software and not using the EOS, or OBS softwares.

    Strange and frustrating

    Then scroll a bit up and read again ;)

    (it's not 1.4.00.8872, but 1.4.00.11161 that solves the problem)

    And yes, as RGNiemeyer pointed out correctly: sudo means super user do, so you need admin privileges to use the commands that were needed for the workaround. The message says, that your current user account doesn't have admin privileges. So you would have had to ask someone with admin privileges on your machine to do that workaround for you. So you can be even more happy than us about 1.4.00.11161 finally solving this ridiculous problem.

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