How to change the prime domain in Teams Free

[ThomasKern1989]

Dear Sir or Madam,

how can I change my prime domain in Teams Free? It is ****.onmicrosoft.com right now and I want it have changed, so that the email address of the admin also changes accordingly.

Furthermore there is still an old proxy address in the contact info of the admin, which I want to delete, but the fields are greyed out.

I would be glad to get help.

Best regards,

Thomas

[#2]

I believe this is something you cannot do with Microsoft Teams Free nad you need to have a Microsoft 365 business plan to do it: https://docs.microsoft.com/en-us/microsoft-365/admin/setup/add-domain?view=o365-worldwide