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How to Remove a CNAME Record Managed by Microsoft 365

Phi Hung Vo Oct 12, 2026 868 views

Question details

The user needs to remove an existing CNAME record for a third-party integration (like HubSpot), but their domain registrar indicates that the domain name servers are currently managed by Microsoft 365.

How to Remove a CNAME Record Managed by Microsoft 365

Product: Microsoft 365
Device & OS: not provided
Scenario: Modifying or removing domain DNS records to authenticate external services or marketing platforms.
Observed behavior: The domain registrar's control panel locks DNS editing because the nameservers are pointed to Microsoft, requiring the user to find an alternative way to update the configuration.

Before you start

Ensure you have Global Administrator privileges for your Microsoft 365 account or the login credentials for your third-party reseller portal before attempting to modify DNS records.

Solution 1Recommended

Use the Microsoft 365 Admin Center for Direct Subscriptions

If you purchased Microsoft 365 directly and hold global admin rights, you can manage your DNS or request technical assistance through the admin center.

When Microsoft manages your domain's DNS, any additions or removals of CNAME records must be executed within the Microsoft 365 environment rather than your domain registrar.

Log into the Admin Center

Navigate to the Microsoft 365 admin center (admin.microsoft.com) and sign in using your Global Administrator credentials.

Access DNS Settings

Go to Settings > Domains. Select your domain, navigate to the DNS records tab, and attempt to delete the target CNAME record directly.

Contact Support if Needed

If you cannot modify the record manually, click on the 'Help & support' icon in the bottom right corner, type your DNS request, and select 'Contact support' to open a service request.

Use the Microsoft 365 Admin Center for Direct Subscriptions

DNS Propagation Time: After removing the CNAME record, it may take anywhere from a few minutes to 48 hours for the changes to propagate across global DNS servers.

Solution 2

Contact Your Reseller or Syndication Partner

Use this method if your Microsoft 365 subscription was purchased through a third-party provider (such as GoDaddy or a local IT partner).

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Frequently Asked Questions

Why can't I edit my CNAME record directly on Crazy Domains?

When you point your domain's nameservers to Microsoft 365, you are delegating DNS authority to Microsoft. This disables the DNS editing capabilities at your original domain registrar, requiring all future changes to be made through Microsoft 365.

Can I switch DNS management back to my registrar?

Yes, you can log into your registrar and change your nameservers back to their default settings. However, you will then need to manually add all of Microsoft's required DNS records (like MX, TXT, and CNAME) to your registrar's portal to ensure your email and Teams services continue to work.

How do I know if I am a Global Administrator?

Sign in to the Microsoft 365 admin center. If you do not have permission to view the admin center or the 'Users' and 'Settings' menus are missing, your account does not have Global Administrator privileges. You will need to contact the person in your organization who holds these rights.

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