Additional features, settings, or issues not covered by specific Microsoft Teams categories
Hi PeterJ86,
As far as I know, Microsoft Teams desktop clients can be downloaded and installed by end users directly from https://teams.microsoft.com/downloads if they have the appropriate local permissions (admin rights are not required to install the Teams client on a PC but are required on a Mac). May I confirm that if your Mac has multiple users and the account you signed on your Mac is a Admin account? If not, please change the user to be an administrator of your Mac and check the result.
Moreover, may I confirm that this issue occur when installing Microsoft Teams or signing in your Office 365 Admin account?
Regards,
Bryan