The Microsoft Office Specialist: Outlook Associate (Office 2019) exam, MO-400, validates core skills in Microsoft Outlook. It shows that you can apply Outlook's main features on your own, such as customizing the interface, formatting messages, and sending and responding to email and meeting requests. It suits administrative professionals, project coordinators, and business users.
The exam covers practical tasks such as enhancing professional correspondence, creating calendars, and scheduling appointments. Examples include coordinating building resources, sending messages for marketing campaigns, planning staff meetings, and assigning meeting action items. You complete performance-based tasks inside Outlook, so the exam reflects everyday work.
To prepare, build a solid foundation in Outlook's core tools and practice real workflows, such as setting up message rules, flags, and categories; creating and responding to meeting invitations; and managing contacts and groups. Review the full MO-400 exam objectives on Microsoft Learn.