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Each user or device that accesses a licensed Windows Server requires a Windows Server Client Access License (CAL) or a Windows Server and a Remote Desktop Services (RDS) CAL.
Windows Server 2025 features include Remote Desktop Services (RDS), which enable remote access to graphical desktops and Windows applications. So-called Client Access Licenses (CALs) are required to benefit from the central provision of applications. When you purchase a Microsoft Remote Desktop Services 2025 User CAL, you can entitle a specific user to a Remote Desktop Session Host connection. The licensed user is free to choose which client device is used to establish the connection. Whether for support cases, access to a remote, physical PC or the use of a Virtual Desktop Infrastructure (VDI), the remote desktop services can be used for numerous use cases. When you buy a Microsoft Remote Desktop Services 2025 User CAL online, you are ideally equipped for a wide variety of corporate tasks.
Windows Server 2025 RDS CAL is the latest version for Windows Remote Desktop Services. Windows Server 2025 RDS is compatibles with all 2025 edition of windows server (i.e. Windows Server 2025 Essentials, Windows Server 2025 Standard and Windows Server 2025 Datacenter). If your organizations workstations organization are networked, you likely depend on network server software to perform certain functions, such as file and print sharing. To access this server software legally, you need a Client Access License (CAL).
Microsoft's licensing model If you use Windows Server, you don't just have to license the actual operating system. In addition, it is necessary to purchase a license for each individual user or for each end device used. This also applies if you are using RDS. You therefore need a so-called Windows Server CAL for this. The term CAL stands for Client Access License. You have two different options: You can license either the individual users or the individual devices.
Windows Server 2025 RDS Device CAL: With a Device CAL, you purchase a CAL for every device that accesses your server, regardless of the number of users who use that device to access the server. Device CALs may make more economic and administrative sense if your company has workers who share devices, for example, on different work shifts. Purchasing a Device CAL might make more sense if your company's employees need to have roaming access to the corporate network. This can help different uses access the networking device only from the organizations premises or only recognized devices for security purposes.
Windows Server 2025 RDS User CAL: With the Windows Server 2025 User CAL, you need to purchase a CAL for every user. Users will use the CAL to access the server to use services such as file storage or printing, regardless of the number of devices they use for that access. Ideal for employees with many devices in some companies, employees have a large number of terminals. Purchasing a User CAL might make more sense if your company's employees need to have roaming access to the corporate network. This can help your access the networking using multiple devices, or from unknown devices, or if you simply have more devices than users in your organization. If the number of devices used is significantly higher than the number of users, it makes sense to purchase a Windows Server 2025 RDS User CAL. It is only necessary to license each user once to access the windows server.