Can You Rename a Microsoft 365 Tenant After Domain Verification?
Question details
The user wants to know if the initial Microsoft 365 tenant name can be changed after verifying a custom domain.
- Product
- Microsoft 365
- Device & OS
- not provided
- Scenario
- Managing Microsoft 365 domain settings and attempting to update the SharePoint and OneDrive URLs to match a newly verified custom domain.
- Observed behavior
- Adding and verifying a custom domain successfully changes email and sign-in addresses, but the original onmicrosoft.com tenant name and the associated SharePoint and OneDrive URLs remain unchanged.
Ensure you have Global Administrator privileges in the Microsoft 365 admin center before attempting to make any domain or tenant-level adjustments.
Use Your Custom Domain for Emails and Sign-ins
While you cannot completely rename the initial onmicrosoft.com domain, you can set your verified custom domain as the default for all user-facing interactions.
Microsoft 365 does not allow you to change the underlying tenant name (the onmicrosoft.com domain) once it is created. However, by adding a custom domain, you can ensure that your users sign in and send emails using your company's actual domain rather than the default Microsoft one.
Log into the Microsoft 365 admin center, navigate to 'Settings' in the left-hand menu, and select 'Domains'.
Click on your newly verified custom domain, select 'Set as default', and confirm your choice.
Go to 'Users' > 'Active users', select the users you want to update, and change their primary email address and username to use the new custom domain.
Create a New Microsoft 365 Tenant
If changing the SharePoint and OneDrive URLs is an absolute requirement for your organization, you must create a completely new Microsoft 365 subscription.
Choose WPS Office for a Hassle-Free Productivity Experience
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- 1. Download the Installer: Visit the official WPS Office website and click the free download button for your operating system.
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Frequently Asked Questions
Why do my SharePoint and OneDrive URLs still show the old onmicrosoft.com domain?
The underlying tenant name dictates these URLs and is permanently established when your subscription is created. It remains unchanged even after adding and verifying a custom domain.
Can I migrate my data if I decide to create a new Microsoft 365 tenant?
Yes, but it requires a tenant-to-tenant migration process. You will need to manually migrate or use third-party migration tools to move your emails, SharePoint sites, and OneDrive files to the newly created environment.
Is it possible to add multiple custom domains to a single Microsoft 365 tenant?
Yes, you can add and verify multiple custom domains within a single tenant to manage different email addresses and user sign-ins, though the backend SharePoint URLs will still use the original tenant name.
