The Exchange Management Tools (EMT) must be installed on a domain-joined computer.Active Directory is installed and the Forest Functional Level is Windows Server 2012 R2 or higher.The solution below does not require this. The Microsoft supported way to do this is to install an Exchange Server in the org. Keep in mind that this solution is not supported by Microsoft, since manual configurations must be made in AD using ADSI Edit. The following steps will let you install the Exchange 2019 Exchange Management Tools (EMT) in an AD environment without having to install Exchange Server. These customers may be looking for a way to manage mailboxes and groups from AD, so they also have a single source of authority. Here, user accounts and groups are managed on-premises, but mailboxes are managed in Exchange Online.

In other environments, customers are using Azure AD Connect to sync users from AD on-premises to the cloud. Those customers may be looking for a way to master accounts, groups, and mailboxes from AD on-prem so they have a single source of authority, similar to the way that hybrid customers do. This leads to confusion since accounts and passwords are not synced, so usernames and passwords can be different. In some environments, these customers are having to manage user accounts and groups in both AD and Azure AD. For example, customers who migrated their email from an Exchange hosted environment or from a different email system, such as Notes. Some Exchange Online customers have an Active Directory on-premises, but never had Exchange Server on-prem.

Windows 10 ad management tools