A Windows Server RDS CAL (User) grants a named user the right to access a Windows Server via Remote Desktop Services (RDS) – regardless of how many devices are used for access.

This option is particularly suitable for companies where employees work with multiple devices, such as desktop PCs, laptops, or mobile devices. A User CAL is device-independent and therefore offers maximum flexibility.

The service is provided digitally. After purchase, you will receive all the necessary information for use and activation.

This RDS CAL is intended for Windows Server 2025 and can also be used with older Windows Server versions (2022, 2019, 2016). It cannot be used with future server versions.

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Usage requirements

- Installed Windows Server with Remote Desktop Services enabled

Valid Windows Server CALs are also required.

RDS CALs are not replacement CALs , but an extension.

-Suitable for Windows Server 2019 and 2022

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Mini-FAQ

Is this version compatible with all MS Server versions?

Yes, this version is backward compatible with all previous Windows Server versions.

What is an RDS CAL?

An RDS CAL (Remote Desktop Services Client Access License) allows access to a Windows Server via remote desktop connections.

What is the difference between User CAL and Device CAL?

A User CAL is tied to a user and can be used by multiple devices. A Device CAL is tied to a single device.

Is a regular server CAL sufficient?

No. Remote Desktop access always requires RDS CALs in addition to Server CALs.

How is the delivery made?

The service will be provided exclusively digitally.

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Comparison block: User CAL vs. Device CAL

RDS User-CAL

-Access per user

-Use of multiple devices possible

Ideal for modern, flexible workplaces

RDS Device CAL

-Access per device

- Unlimited users per device

-Suitable for shift systems or terminal PCs

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Tech Compass classification

User-friendliness: High
Flexibility: Very high
System control: High
Scalability: Very good
Price/performance ratio: Very good for multiple devices per user

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Problems & Solutions

Problem: Remote Desktop connection is rejected
Solution: Check if enough RDS CALs are installed and assigned to the server.

Problem: License warning on the server
Solution: Configure the RDS license server correctly and check the CAL type (User vs. Device).

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Legal notice

This is a digital activation or access authorization for Remote Desktop Services. It can only be used in conjunction with an existing Windows Server. Brand and product names are used solely for the purpose of clearly describing compatibility.

Link to Windows Server products

Cross-link to the Device CAL variant

Link to installation or configuration service