Microsoft Teams Mac OS client doesn't recognize virtual cameras by default (EOS Webcam utility, EpocCam, NDI client)
Use the below terminal commands until the problem is resolved
Be aware this fix will affect product security
xcode-select --install
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"