How to Update Your Name and Email in Microsoft 365 After a Name Change

Update Your Name and Email in Microsoft 365 | Darkhorse Tech
Microsoft 365 How-To

How to Update Your Name and Email in Microsoft 365 After a Name Change

Update your display name and primary email address while keeping your old address active, so every message still lands in one inbox.

3 MIN READMICROSOFT 365HOW-TO
TL;DR

After a name change, your IT admin can update your Microsoft 365 display name, change your login (UPN) and primary SMTP address to your new name, and keep your original address as a secondary alias. Mail sent to the old address still lands in the same inbox. Request the change through your IT provider rather than doing it yourself, since it requires admin access and mistakes can cause lost access, delivery issues, or duplicate accounts.

One of our amazing employees got married and it clued me in to help write a guide to help others in a similar scenario!

Whether you've recently gotten married, changed your name for personal reasons, or want to ensure your email reflects your current identity, Microsoft 365 makes it possible to update your display name and primary email address—while keeping your original address active and forwarding all emails into a single inbox. Here's how to do it the right way, with no disruption to your daily workflow.

01Why it matters

Direct answerYes, you can change your name and email in Microsoft 365 without missing a message. Your admin sets your new address as the primary and keeps your original address as a secondary alias, so mail sent to either one lands in the same inbox.

Your email address is a key part of your professional identity. Ensuring your display name and email address are current helps maintain consistent communication with patients, vendors, and coworkers—especially in a tight-knit professional community like dentistry. But don't worry: with the steps below, your old email address will still work, so you'll never miss a message.

SettingBeforeAfter
Display nameJane SmithJane Doe
Login (UPN) and primary SMTP addressjane.smith@yourpractice.comjane.doe@yourpractice.com
Original address—jane.smith@yourpractice.com kept as a secondary alias

02Step 1: Request the change through your IT team

Direct answerContact your IT provider before changing anything yourself. The update requires Microsoft 365 administrator access, and if it's not done correctly it can lead to lost access, mail delivery issues, or duplicate accounts.

At Darkhorse Tech, we recommend contacting your IT provider first (that's us!) before making any changes yourself. Why? Because this update typically requires administrator access to Microsoft 365, and if it's not done correctly, it could lead to lost access, mail delivery issues, or duplicate accounts.

To request the update:

  • Send a support ticket or email to our help desk.
  • Include your current name and email, the new name you'd like to use, and when you'd like the change to take effect.

03Step 2: Admin updates your display name

Once we receive your request, our IT team will:

  1. 1
    Sign in to the admin portalLog into your Microsoft 365 Admin Portal.
  2. 2
    Open active usersNavigate to Users > Active Users.
  3. 3
    Find your accountLocate your account and click into your profile.
  4. 4
    Update the display nameUpdate your Display Name to reflect your new name (e.g., from Jane Smith to Jane Doe).
  5. 5
    SaveSave the changes.

This is the name that will appear in Outlook, Microsoft Teams, and any other Microsoft 365 service.

04Step 3: Change your primary email address

Next, we'll:

  1. 1
    Update your User Principal Name (UPN)Your UPN is your login/email address. We change it to match your new name (e.g., jane.doe@yourpractice.com).
  2. 2
    Set the new Primary SMTP AddressThis is what shows up when you send email.
  3. 3
    Keep your original address as a Secondary AliasYour old address (e.g., jane.smith@yourpractice.com) stays active.

All emails sent to your old email will automatically land in the same inbox—no need to monitor multiple accounts.

05Step 4: Confirm the transition

Direct answerOnce the change is complete, log out and back into your Microsoft 365 apps, update your email signature, and let coworkers and contacts know if needed.

We'll confirm with you when the changes are complete, and we recommend:

  • Logging out and back into your Microsoft 365 apps (Outlook, Teams, etc.).
  • Updating your email signature.
  • Letting your coworkers and contacts know about the update, if needed.

Need help?

Reach out to our support team and we'll handle the change securely and quickly.

The bottom line

Changing your name shouldn't mean missing emails or getting lost in your inbox. At Darkhorse Tech, we help dental professionals like you keep IT simple and seamless. If you're planning a name change or just want help managing Microsoft 365, we've got your back.

Frequently asked questions

Can I change my email address in Microsoft 365 after a name change without losing emails?
Yes. An admin updates your display name, changes your User Principal Name and primary SMTP address to your new name, and keeps your original address as a secondary alias. Emails sent to the old address automatically land in the same inbox.
Who should change my name and email in Microsoft 365?
Your IT provider. The update typically requires Microsoft 365 administrator access, and if it's not done correctly it can lead to lost access, mail delivery issues, or duplicate accounts.
Where is the display name changed in Microsoft 365?
In the Microsoft 365 Admin Portal under Users > Active Users. The admin opens your profile, updates the Display Name, and saves. That name appears in Outlook, Microsoft Teams, and other Microsoft 365 services.
What should I do after my Microsoft 365 name change is complete?
Log out and back into your Microsoft 365 apps such as Outlook and Teams, update your email signature, and let coworkers and contacts know about the change if needed.

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