Change O365 group email address using powershell

Hello,

We ran into this as well and did open a Premier Support request with Microsoft. The answer we received was that the PrimarySmtpAddress attribute can only be updated by an account with the Global Administrator role. More restrictive roles such as User Management Administrator or Exchange Administrator are not sufficient. We did verify that our folks with the Global Admin role can indeed successfully run the commands which fail for other individuals.

So the solution - for now, anyway - is to have someone in the Global Admin role update the primary SMTP address when needed.