In the modern workplace, a messaging system is a crucial part of every organization. Microsoft Exchange Online is a hosted messaging solution that delivers email, calendar, contacts, and tasks from PCs, the web, and mobile devices. It integrates fully with Azure Active Directory, enabling administrators to use group policies, as well as other admin tools, to manage Exchange Online features. In this course, instructor Oluwaseun Adebayo covers the most common issues you may experience with Exchange Online—including administrative tools, mailbox permissions, contacts, distribution lists, and more—explaining their causes and how to resolve these issues.