Windows Server 2019 Essentials Great for small companies running a single server 25 User limit or 50 devices – No CALs (Client Access Licenses) required Includes PC backup and optional connection to Office 365 Windows Server Essentials edition is a cloud-connected first server designed for small businesses with up to 25 users and 50 devices. If you are considering installing any version of Windows Server Essentials, we would encourage you to consider Microsoft 365.
