Trial user guide: Microsoft 365 Business Premium

Welcome to the Microsoft Business Premium trial user guide! This guide will help you make the most of your free trial. You can see firsthand how Microsoft 365 Business Premium increases productivity and helps safeguard your organization with advanced security capabilities. Use this guide to set up your threat protection features, analyze detected threats, and respond to cyberattacks.

Set up the Microsoft 365 Business Premium trial

When you start a trial or purchase Microsoft 365 Business Premium, your first step is to get everything set up.


Save this trial user guide to your browser favorites. When links in the trial user guide take you away from this location, it'll be easier to return to this guide to continue.

  1. Set up your trial!

    After you've initiated the trial and completed the setup process, it can take up to two hours for changes to take effect.

  2. Use your preset security policies. These policies represent a baseline protection profile that's suitable for most users. Standard protection includes:

Add a domain

When you try or buy Microsoft 365 Business Premium, you have the option of using a domain you own, or buying one during the sign-up process.


If you purchased a new domain when you signed up, your domain is all set up and you can move to Add users and assign licenses. Go to the admin center(

  1. From the admin center menu, choose Setup to start the wizard.

  2. Select Set up email with a custom domain and then, Use a domain you already own such as

  3. Follow the rest of the steps in the wizard to complete the process.


    If you purchased a domain during the sign-up, you will not see the Add a domain step here. Go to Add users instead.

  4. Follow the steps in the wizard to create DNS records at any DNS hosting provider for Office 365 that verifies you own the domain. If you know your domain host, see Add a domain to Microsoft 365.

  5. If your hosting provider is GoDaddy or another host enabled with domain connect, you'll be asked to sign in and let Microsoft authenticate on your behalf automatically.

Onboard and protect devices

Microsoft 365 Business Premium includes Defender for Business, a new security solution to protect devices. See Onboard devices to Microsoft Defender for Business.

  1. Go to the Microsoft 365 Defender portal ( and sign in.

  2. Go to Assets > Devices. If Defender for Business isn't already set up, you will be prompted to run the setup wizard.

  3. Onboard devices.

  4. Review your security policies.

Use Microsoft 365 Apps on devices

  1. First, you'll need to install Microsoft 365 Apps.

  2. Go to and sign in. (See Getting Started at

  3. Create an Office document, such as a Word document.

  4. Share a document with a team member.

Start using the Microsoft 365 Defender portal

  1. Access the Microsoft 365 Defender portal at

  2. Take some time to familiarize yourself with the portal.

  3. Now, assess your security posture, and see how you can improve your score.

  4. Learn how to respond to a security incident.

  5. Lastly, review remediation actions.

See also