How does changing the primary Entra ID domain affect Entra joined devices and user profiles?

Question

Hello, I currently have a tenant with Entra joined laptops, and users log in using their Entra ID accounts. They want to change the primary Entra domain and eventually remove the current one. How will this domain change affect their local Windows profile? Will they log in with new usernames, and everything remains the same? Or do I need to set up new Windows profiles for them?

Answer 1

Thank you for reaching out to the QnA community.

The Primary Entra domain is the default domain for new user when new accounts are created. Changing the primary domain does not change the domain for existing accounts. https://learn.microsoft.com/en-us/entra/identity/users/domains-manage#set-the-primary-domain-name-for-your-microsoft-entra-organization You can delete custom domain names from your tenant, Not the initial onmicrosoft.com domain. https://learn.microsoft.com/en-us/entra/identity/users/domains-manage#delete-a-custom-domain-name If you are changing the users domain in their azure account to the verified primary domain they can log in to their device with the new UPN. It should use the same profile.
Test it out by changing a users domain account and log in to an Entra Joined device. The account should use the existing profile. Note when switching users domain in azure it can take a few minutes before the new domain upn will log in successfully.

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