Creating initial tenant with preferred name

Question

I have a routable DNS name that I intend on using (example.com), I also previously signed up for a trial (thinking it was decommissioned) so I signed up for a new one and have upgraded it to pay-as-you-go.

The new one has mynameexample.onmicrosoft.com as the service address and I want example.onmicrosoft.com.

I decommissioned the original tenant to free up the preferred address and added it to my new tenant. However, I cannot remove the initial name.

I don't want my name in the service address as this is for my company. How can I resolve this?

Thanks.

Answer 1

@ritmo2k

Thank you for your post and I apologize for the delayed response!

From your issue and screenshot, I understand that you're trying to keep your Primary domain example.onmicrosoft.com and remove the mynameexample.onmicrosoft.com domain from your Azure AD domain list. Unfortunately, once the onmicrosoft.com domain is added, it can't be removed. For more info.

Note: Azure Active Directory (Azure AD) tenants come with an initial domain name, <domainname>.onmicrosoft.com. You can't change or delete the initial domain name, but you can add your organization's names.

You can't remove your onmicrosoft.com domain. Microsoft 365 needs to keep it around because it's used behind the scenes for your subscription. But you don't have to use the domain yourself after you've added a custom domain. If you choose to create a new onmicrosoft.com domain, it cannot be removed. You are limited to five onmicrosoft.com domains in your Microsoft 365 environment, so make sure to check for spelling and to assess your need if you choose to create a new one.

Our engineering team is currently aware of this limitation and has a backlog item to look into this.

I hope this helps!

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Additional Links:

• Delete a custom domain name
• ForceDelete a domain name
• Add your custom domain name using the Azure portal
• Error when attempting to delete *.onmicrosoft.com domain from my tenant

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