Just leaving this here to remind me how to get Teams to work with an OBS virtual camera again after an update:
*****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As of version 1.3.00.28778 the process has changed and the above workaround is no longer valid.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"
