Get Microsoft Defender for Business

Defender for Business is a new endpoint security solution designed especially for small and medium-sized businesses (up to 300 employees). This article describes how to get and provision Defender for Business.


You should be a global administrator to complete the tasks described in this article. The person who signs your company up for Microsoft 365 is a global administrator. Learn more about admin roles in the Microsoft 365 admin center.

How to get Microsoft Defender for Business

To get Defender for Business, you can choose from several options:

  • Try or buy the standalone version of Defender for Business.
  • Get Microsoft 365 Business Premium, which includes Defender for Business.
  • Work with a Microsoft partner who can help you get everything set up and configured.

Defender for Business provides advanced security protection for your company's devices. For more information, see What is Microsoft Defender for Business?

  1. Go to the Microsoft Defender for Business web page, and select an option to try or buy Defender for Business. Fill in the requested information.

    If you're starting a trial, look for your acceptance email, which contains your promo code and a link to sign in. And be sure to see the Trial user guide for Defender for Business.

  2. Go to the Microsoft 365 Defender portal (, and either sign in using your existing work or school account, or follow the prompts to create a new account.

  3. In the Microsoft 365 Defender portal, in the navigation bar, go to Assets > Devices. This action initiates the provisioning of Defender for Business for your tenant. You'll know this process has started when you see a message like what's displayed in the following screenshot:

    Screenshot of provisioning message in Defender for Business.

    It might take a few hours for your tenant to finish provisioning before you can onboard devices or complete the setup and configuration process.

    If you have Microsoft 365 Business Premium and you haven't set it up yet, see Microsoft 365 Business Premium – productivity and cybersecurity for small business. This guidance walks you through how to set up and configure everything, including Defender for Business.

Portals you'll use for setup and management

When you use Defender for Business, you'll work with two main portals: the Microsoft 365 admin center, and the Microsoft 365 Defender portal. If your subscription also includes Microsoft Intune, you might use the Intune admin center instead. The following table summarizes these portals and how you'll use them.

Portal Description
The Microsoft 365 admin center ( Use the Microsoft 365 admin center to activate your trial and sign in for the first time.

You'll also use the Microsoft 365 admin center to:

  • Add or remove users.
  • Assign user licenses.
  • View your products and services.
  • Complete setup tasks for your Microsoft 365 subscription.
To learn more, see Overview of the Microsoft 365 admin center.
The Microsoft 365 Defender portal ( Use the Microsoft 365 Defender portal to set up and configure Defender for Business.

You'll use the Microsoft 365 Defender portal to:

  • View your devices and device protection policies.
  • View detected threats and take action.
  • View security recommendations and manage your security settings.
To learn more, see Get started using the Microsoft 365 Defender portal.
The Intune admin center ( We recommend using the Microsoft 365 Defender portal to manage your security settings and devices. However, you can use the Intune admin center instead if you prefer. To learn more about Intune, see Microsoft Intune is an MDM and MAM provider for your devices.

Next steps