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Get Microsoft Defender for Business - Microsoft Defender for Business | Microsoft Learn

1 October 2026Doc update+11 / −13 lines

In brief

The article updates wording, image text, punctuation, and navigation links, including direct links to the Microsoft 365 admin center and Purchase services page. Placeholder direct URLs for the Devices page were removed.

What Defender admins need to know

No administrator action is required; the revised guidance provides clearer navigation for obtaining and setting up Defender for Business.

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Get Microsoft Defender for Business - Microsoft Defender for Business | Microsoft Learn

This article describes how to get Microsoft Defender for Business.

Defender for Business is an endpoint security solution designed especially for small and medium-sized businesses with up to 300 users. For more information, see Microsoft Defender for Business.

Diagram that depicts step 1 - Get Defender for Business.

How to get Microsoft Defender for Business

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

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

Work with a Microsoft partner

Microsoft maintains a list of solution providers who are authorized to sell offerings, including Microsoft 365 Business Premium and Microsoft Defender for Business. To work with a Microsoft partner, use the following steps to find a solution provider in your area:

  1. Open the Connect with partners page at Connect with partners page.

  2. In the Browse partners pane, specify appropriate search criteria. For example:

    • Your location.

    • Microsoft customer size

    • Solution category: For example, Security and/or Threat Protection.

    • Services: For example:

      • Resellers > Licensing

  3. Review the results. Select a provider to learn more about their expertise and the services they provide.

Get Defender for Business (standalone)

Defender for Business provides advanced security protection for devices in eligible Microsoft 365, Office 365, and non-Microsoft organizations. 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 start a trial, look for the acceptance email that contains your promo code and a link to sign in. And be sure toFor more information, see the Trial user guide for Defender for Business.

  2. Go to the Microsoft Defender portal at https://security.microsoft.com and sign in using your existing work or school account, or follow the prompts to create a new account.

  3. In the Microsoft Defender portal, go to Assets > Devices. Or, to go directly to the Devices page, use xxxx.page.

    This action initiates the provisioning of Defender for Business for your organization. You know this process started when you see the following message:

If you have Microsoft 365 Business Premium and you haven't set it up yet, see What is Microsoft Defender for Business?. This guidance walks you through how to set up and configure all of your productivity and security capabilities, including Defender for Business.

Get Microsoft 365 Business Premium

Microsoft 365 Business Premium includes Defender for Business, Microsoft Defender for Office 365 Plan 1, and Microsoft 365 Apps (formerlyApps, formerly known as Office apps).apps. For more information, see Why should I choose Microsoft 365 Business Premium?.

  1. Go to one of the following locations:

  2. Choose to try or buy Microsoft 365 Business. For more information, see Try or buy a Microsoft 365 for business subscription.

  3. After you sign up for Microsoft 365 Business Premium, you receive an email with a link to sign in and get started. Proceed to Set up Microsoft 365 Business Premium.

  4. In the Microsoft Defender portal, go to Assets > Devices. Or, to go directly to the Devices page, use xxxx.page.

    This action initiates the provisioning of Defender for Business for your organization.

  5. Follow the guidance in Microsoft 365 for business security best practices to set up your security capabilities.

  • You can add a maximum of 60 Microsoft Defender for Business servers licenses per subscription to Microsoft 365 Business Premium or Defender for Business.
  • Instead of Microsoft Defender for Business servers, you can use Microsoft Defender for Servers Plan 1 or Plan 2.

  1. In the Microsoft 365 admin center at Microsoft 365 admin center, go to Billing > Purchase services. Or, to go directly to thePurchase services page, use Purchase services page.

  2. On the Purchase services page, find and select Microsoft Defender for Business servers.

    • You need one Microsoft Defender for Business servers license for each instance of Windows Server or Linux.