Microsoft Windows Server 2025 Essentials

Windows Server 2025 Essentials: server operating system for small businesses

Windows Server 2025 Essentials is the edition of the current Windows Server generation that Microsoft intends for small businesses with up to 25 users and 50 devices. Unlike licensing by core, one server licence is sufficient for a server with one processor and up to 10 cores, and no Windows Server CALs are required for user access. The edition is therefore suitable for offices and practices that want to run a central server for user accounts, file shares or an industry-specific application.

Licence scope and use

A licence for Windows Server 2025 Essentials covers one server with one processor socket and up to 10 cores. The server software may be used in one running instance, either directly on the hardware or in a virtual machine. If Essentials runs virtualised, the physical installation may only be used to host and manage this one virtual machine. This allows the server to be run, for example, as a virtual machine under Hyper-V.

For the up to 25 users and 50 devices, no Windows Server CALs are required. RDS CALs are not intended for this edition either; for remote access via Remote Web Access, Microsoft only supports the RD Gateway role service.

New in Windows Server 2025

Several protection features are enabled out of the box. Credential Guard for protecting credentials is active by default on devices that meet the requirements. Outbound SMB connections require signing by default, and SMB encryption can be enforced for all outbound connections. For Active Directory, Windows Server 2025 brings LDAP encryption by default on new installations, TLS 1.3 for LDAP and randomly generated passwords for computer accounts. With Windows LAPS, Windows manages the passwords of local administrator accounts automatically, also as a passphrase if desired.

The Desktop Experience is based on Windows 11. OpenSSH Server and the WinGet package manager are preinstalled. A direct upgrade is possible across up to four versions, starting from Windows Server 2012 R2.

Difference from Windows Server 2025 Standard

Windows Server 2025 Essentials is limited to 25 users, 50 devices, one processor with up to 10 cores and one instance. Windows Server 2025 Standard is licensed per core, and the number of users there depends on the CALs purchased. With all cores fully licensed, Standard allows two virtual machines and supports Remote Desktop Services with RDS CALs; this requires Windows Server CALs for every user or device. If more users, devices, cores or server instances are needed, choose Windows Server 2025 Standard.

Buy Windows Server 2025 Essentials: licence and scope of delivery

You receive a product key to activate Windows Server 2025 Essentials on one server. The scope of delivery includes:

• the product key for Microsoft Windows Server 2025 Essentials
• the download link for the server software (all downloads are also available under Software Download)
• instructions for installation and activation (see also Guides and FAQ)
• the invoice by email

Once your payment has been received, your product key is displayed directly on the order confirmation page and also sent to you by email. After that, you can retrieve it again at any time: with a customer account under My Product Codes, without a customer account via the Guest Portal.

If you have any questions about installation or activation, our Support team is available around the clock by email. You will find offers for businesses, schools and public authorities in the B2B Area. You will find further server products in the category Windows Server and under Operating Systems.

System requirements

Minimum requirements according to Microsoft.