Windows Server 2019 Access Licenses (CALs)



Why Windows Server 2019 Access Licenses (CALs)

When you buy a version of Windows Server 2019, you get a server license that entitles you to install and use the said server operating system on your device. To connect it to additional devices, you need so-called Windows Server Device CALs (Client Access Licenses). These are device licenses that entitle you to access the server and all data on it from licensed devices.

Verify individual devices with Windows Device CAL

With device licenses you can easily determine in your company which devices get access to the server. Individual licensing allows you to connect as many devices as you need. With this package you get 5 Windows Server Device CALs, which you can use on any device. Unlike User CALs, which are tied to a specific user and can be used independently of a device, Device CALs are always tied to the specific device.

Making the best use of resources together

Device CALs are particularly well suited for organizations where multiple employees work on the same device. With Windows Server Device CALs, you do not have to purchase access per employee, but only per device. Whether this form of licensing is suitable for you depends on the structure of your company. By choosing the right CALs you can work cost-efficiently and save resources. Device CALs and User CALs can also be combined. However, you cannot split them. A CAL is always bound to its respective purpose.

For example, use Windows Server Device CALs for Windows Server Standard or Windows Server Datacenter.

Each server user needs a separate Windows User CAL

Windows Server User CALs (Client Access Licenses) allow you to network individual users with a Windows Server operating system. In order to make your Windows Server operating system available to as many users as possible, you need appropriate Microsoft Windows Server User CALs. For each user that is to be connected to the server system, a separate access license must be verified. After that the user has full access to all contents and services of the server system, which are released for him by the administrator.

Easy access through individual access data

In contrast to Device CALs, also called device licenses, User CALs for Windows Server are always bound to a specific user. This user receives individual access data to the server and can use it at any workstation. User CALs are not bound to a specific device. They are therefore particularly suitable if your employees use several devices, for example a desktop PC and a laptop. Each user has full access to the server from any device via his Microsoft Windows Server User CAL. The user licenses make working so much more flexible and allow easy and fast access to relevant data.

Easily connect all employees to the server

How many Microsoft Windows Server User CALs you need to purchase depends on how many employees need server access. In this package 5 User CALs are included. This allows exactly 5 users to access the server. You can extend your Windows Server User CALs as much as you want and give all your employees access to the server. Adjust the required amount of CALs exactly to your needs and work cost-efficiently and resource-saving. Note: User CALs and Device CALs can be combined, but not split. They are always bound to their respective purpose. A Windows User CAL can be used for Windows Server Standard and Windows Server Datacenter.

Product information “Windows Server – 5 RDS CALs”

The Microsoft Windows Remote Desktop Services (RDS) are the successor of the old Terminal Server CALs. The RDS is a centralized desktop and application platform that gives you multiple options for delivering and managing desktops and connecting remote workers with session virtualization and Virtual Desktop Infrastructure (VDI) technologies. This allows you to increase flexibility and data security in the enterprise with a centralized desktop solution, while freeing up your IT department to manage desktops and applications.


Remote Desktop Services (RDS) features

  • Simplified management through a unified and scalable connection broker for both session desktops and VDI desktops.
  • Unified RD Web Access and “RemoteApp and Desktop Connection” functionality for access to VDI and session desktops.
  • With RemoteApp permission and filtering, users can see only the applications intended for them.
  • Rich remote user experience that approximates what users are used to when accessing local resources.
  • Full multi-monitor support
  • Windows Media Player redirection
  • Audio feed and audio recording
  • Increased bitmap acceleration for 3D applications and rich media content such as Silverlight and Flash.
  • Improved application compatibility and management of remote desktop session host servers including App-V for RDS.
  • Comparison with Terminal Server CALs

Remote Desktop Services are equivalent in functionality to Terminal Server CALs. Unlike Terminal Server CALs, Remote Desktop Services includes Microsoft Application Virtualization for Terminal Services (App-V) usage rights.



RDS must be licensed for each device that accesses a Terminal Server. RDS, like other CALs from Microsoft, are for a named user (User CAL) or device (Device CAL).

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