Update your Microsoft 365 admin phone number and email address

This article explains how you, the admin, can change your business phone and email address in Microsoft 365.

If you're looking for how to change your company's profile information, such as company name and address, company phone number, and technical contact information, see Change your organization's address, technical contact email, and other information.

For more information about changing user contact information or removing former employees, see Related content.

To update your phone number and email address

Use the Security Info page to change your mobile phone number and alternate email address. The alternate email address is used for important notifications, such as resetting your admin password (not your computer admin password).

  1. Browse to the Microsoft 365 admin center.

  2. In the header, select your profile icon > My account > Security Info.

  3. In the Security info tab, select Add Method > Phone > Alternate Phone or Email to add details. To update your mobile, phone, and alternate email address details, select Change. Make sure you use something other than your Microsoft email address for your alternate email address.


    The alternate email address and the mobile phone number are needed for resetting your admin password (not your computer admin password).

  4. When you are finished, select Save.

For answers to billing questions, see:

Change a user name and email address (video)
Add a new employee (video)
Remove a former employee (video)
Access and back up a former user's data (article)