Add users and assign licenses in Microsoft Defender for Business

As soon as you have signed up for Defender for Business, your first step is to add users and assign licenses. This article describes how to add users and includes next steps.

Add users and assign licenses


You must be a global administrator to perform this task. The person who signed up your company for Microsoft 365 or for Defender for Business is a global administrator by default.

  1. Go to the Microsoft 365 admin center at and sign in.

  2. Go to Users > Active users, and then select Add a user.

  3. In the Set up the basics pane, fill in the basic user information, and then select Next.

    • Name: Fill in the first and last name, display name, and username.
    • Domain Choose the domain for the user's account. For example, if the user's username is Pat, and the domain is, they'll sign in by using
    • Password settings: Choose whether to use the autogenerated password or to create your own strong password for the user. The user must change their password after 90 days. Or you can choose the option to Require this user to change their password when they first sign in. You can also choose whether you want to send the user's password in email when the user is added.
  4. On the Assign product licenses page, select Defender for Business (or Microsoft 365 Business Premium). Then choose Next.

    If you don't have any licenses available, you can still add a user and buy additional licenses. For more information about adding users, see Add users and assign licenses at the same time.

  5. On the Optional settings page, you can expand Profile info and fill in details, such as the user's job title, department, location, and so forth. Then choose Next.

  6. On the Review and finish page, review the details, and then select Finish adding to add the user. If you need to make any changes, choose Back to go back to a previous page.

Next steps