Windows Server 2019 RDS User CAL

Remote work without compromise — empower your team with secure, centralised access

Imagine your team could work from anywhere, on any device, with the full power of your corporate applications at their fingertips — without ever installing a single program locally. That is the reality Windows Server 2019 Remote Desktop Services (RDS) User Client Access Licenses (CALs) unlock. This 10-pack of RDS User CALs is not just a license; it is the key to a secure, manageable, and cost-effective remote working infrastructure. It is designed for organisations that have embraced mobile working, hot-desking, or BYOD (Bring Your Own Device) policies, where a single named user needs to access their personalised corporate desktop and applications from multiple devices — a company laptop, a home PC, or even a tablet.

The core benefit is simple: one license per user, unlimited device flexibility. Unlike Device CALs that lock a license to a specific machine, a User CAL follows the named individual. This makes it the ideal choice for shift workers, consultants, sales teams, and any employee who is not permanently tethered to a single desk. This is a perpetual license, meaning it is a one-time purchase that does not expire, providing long-term value and predictable IT budgeting. It legally enables a named user to connect to a Windows Server 2019 session host for a full desktop experience, a published RemoteApp, or a personal virtual desktop, ensuring your data remains secure in the data centre, not on vulnerable endpoints.

Key features and benefits

• Perpetual User CAL model — one license, any device: This is a one-time purchase for a named user. That user can access their RDS resources from their office PC, home laptop, or a tablet while travelling. No need to buy multiple licenses for one person, simplifying license management and reducing costs for mobile workers.
• Enables full Remote Desktop Session Host (RDSH) functionality: Transforms your Windows Server 2019 into a powerful application and desktop delivery platform. Multiple users can run applications simultaneously on the server, with only keyboard, mouse, and display information transmitted across the network, ensuring a responsive experience even on low-bandwidth connections.
• Supports all modern RDS deployment scenarios: This license covers session-based desktops, RemoteApp (where individual applications appear to run locally), and Virtual Desktop Infrastructure (VDI) for both personal and pooled virtual desktops. You have the architectural freedom to design the solution that fits your business needs.
• Centralised data and application management: All applications and data reside on the server, not on end-user devices. This dramatically simplifies backup, patching, and security policy enforcement. If a laptop is lost or stolen, sensitive corporate data is not compromised because it was never stored on the device.
• Seamless integration with Remote Desktop Gateway and Web Access: Users can connect securely over the internet via an encrypted HTTPS connection through the RD Gateway, without needing a traditional VPN. RD Web Access provides a simple web portal for users to launch their applications, making access intuitive and straightforward.
• Downward compatibility: While licensed for Windows Server 2019, these RDS CALs are backward compatible with earlier versions of Windows Server. This protects your investment if you are in a transitional phase and managing a mixed server environment.
• Foundation for thin-client computing: Ideal for deploying cost-effective thin clients or repurposing older hardware. Since all processing happens on the server, endpoint devices have minimal hardware requirements, reducing capital expenditure and energy costs.
• Essential legal compliance: RDS CALs are mandatory in addition to a standard Windows Server CAL for every user accessing RDS functionality. This 10-pack ensures you are fully compliant with Microsoft’s licensing terms, avoiding legal and financial risks associated with under-licensing.

What's included with your purchase

When you purchase the Windows Server 2019 RDS 10 User CAL from Lizensa, you are acquiring a genuine, legally binding license agreement, not just a technical activation key. The transaction is transparent and designed for immediate use.

You will receive a digital delivery package containing your unique license key, a comprehensive activation guide, and a VAT invoice. The license type is a volume-license model, typically provided as a Multiple Activation Key (MAK) or via a Key Management Service (KMS) setup, depending on your organisation's size and infrastructure. Our team will clarify the exact type upon delivery to ensure it aligns with your environment. This is a perpetual license with no expiry date, granting you the right to use this version in perpetuity.

The activation process involves installing the Remote Desktop Services role on your Windows Server 2019, installing the RDS Licensing role, and activating the license server with the key we provide. Our guide walks you through this step-by-step. Crucially, this license requires that you already have a Windows Server 2019 base license and the corresponding standard Windows Server CALs for each user. The RDS CAL is an additive license that unlocks the advanced remote desktop features.

Which license type is right for you: RDS User CAL vs. Device CAL?

Choosing between an RDS User CAL and a Device CAL is a foundational decision for your remote access infrastructure. The wrong choice can lead to unnecessary expense and administrative overhead. This product is an RDS User CAL, and understanding its distinct advantages is key.

• RDS User CAL (this product): Grants a single, named user the right to access RDS resources from any number of devices. This is the optimal choice for organisations with mobile employees, shift workers who share workstations, or BYOD policies. For example, a salesperson who uses a desktop PC in the office, a laptop at home, and a tablet on the road needs only one RDS User CAL. It simplifies compliance in user-centric environments.
• RDS Device CAL: Licenses a specific device to be used by any number of users to access RDS resources. This is more suitable for environments with multiple shift workers sharing the same physical endpoint, such as a factory floor kiosk, a hospital nursing station, or a call centre. If three nurses share a single terminal throughout the day, only one Device CAL is needed for that terminal.

In summary, choose User CALs when your users are mobile and use multiple devices. Choose Device CALs when your devices are fixed and used by multiple users. For most modern, flexible working environments, the RDS User CAL provides the greatest flexibility and long-term value.

System requirements / compatibility

This product is a license key and does not have hardware requirements in the traditional sense. However, it is critical to understand the environmental prerequisites for successful deployment. The license is only compatible with a Windows Server environment and is not supported on macOS or Linux server platforms.

• Server Operating System: Requires a properly licensed instance of Windows Server 2019 with the Remote Desktop Services (RDS) role installed and configured. The server must also be covered by the appropriate number of standard Windows Server CALs.
• Client Operating Systems: End-users can connect from a wide range of devices running Windows, macOS, iOS, and Android using the official Microsoft Remote Desktop client application.
• Language Support: This license is language-neutral and supports all server interface languages, including English, German, French, Spanish, Italian, Dutch, Polish, Portuguese, and Japanese.
• Network Requirements: A functioning TCP/IP network and an active internet connection are required for license activation and can be used for secure external access via an RD Gateway. For detailed hardware sizing of the RDS host server (CPU, RAM, storage), you must consult the official Microsoft documentation for your specific workload, as requirements vary significantly based on the number of concurrent users and applications.

Installation and activation

Your journey to a fully functional RDS environment begins immediately after purchase. Lizensa’s automated system processes your order instantly, and your license key and instructions are delivered by email in under 60 seconds on average. No waiting for physical shipments.

The activation is a two-part process. First, you install the Remote Desktop Licensing role on a server in your domain. Second, you use the provided key to activate the RDS Licensing Server with Microsoft. Once activated, the license server will automatically issue RDS CALs to your configured users when they connect. Our included guide provides clear, illustrated steps for this process.

If you encounter any issues, our multilingual technical support team is available free of charge to assist you. The license is perpetual, and you can reinstall the RDS Licensing role on the same server hardware if needed. For major hardware changes or migration to new servers, please contact our support team to ensure a smooth reactivation process.

Why choose Lizensa for your software licenses

Acquiring business-critical server licenses requires a partner you can trust implicitly. Lizensa has built its reputation as a leading European software license retailer by combining wholesale value with uncompromising authenticity and customer protection. When you buy this Windows Server 2019 RDS User CAL from us, you are not just buying a key; you are securing peace of mind.

Our entire process is built for speed and security. The moment your payment is processed through our Stripe-secured checkout — which supports SEPA, iDEAL, BLIK, Google Pay, and all major credit cards — your genuine, verified license key is dispatched. It arrives in your inbox within seconds, allowing you to continue your deployment without frustrating delays. Every license we sell is sourced directly from authorized European distribution channels, guaranteeing 100% Microsoft authenticity and a full compliance audit trail.

As an EU-based company, we provide all the consumer and business protections you are entitled to. You will receive a full VAT invoice with every purchase, with reverse-charge mechanisms available for valid B2B intra-community transactions. Your purchase is covered by the EU’s 14-day right of withdrawal, offering a refund guarantee that grey-market sellers simply cannot match. Furthermore, your activation is valid across all 27 EU member states. Our free, multilingual technical support team stands ready to assist you before, during, and long after your purchase, ensuring your RDS infrastructure is a success.

FAQ — frequently asked questions

Is this RDS User CAL a subscription or a one-time purchase?

This is a perpetual, one-time purchase license. You pay once, and the license does not expire. This is distinct from subscription-based models and provides long-term cost certainty for your organisation.

What is the difference between an RDS CAL and a standard Windows Server CAL?

A standard Windows Server CAL grants a user or device the right to access a Windows Server in general (for file sharing, printing, etc.). An RDS CAL is an additional license required specifically for accessing the advanced Remote Desktop Services functionality, such as a full remote desktop or RemoteApp. You need both a standard CAL and an RDS CAL for each user using RDS.

How fast do I get my license key after payment?

Our delivery is virtually instant. On average, the email containing your license key, invoice, and activation guide arrives in under 60 seconds after your payment is confirmed. You can begin the activation process immediately.

Is this a genuine, legally compliant Microsoft license?

Absolutely. Every license sold by Lizensa is 100% genuine and sourced from authorized European distributors. You will receive a valid activation key and a full VAT invoice, providing a complete audit trail for your software asset management and compliance records.

What if I have trouble activating the license?

We provide free, multilingual technical support to all our customers. If you encounter any difficulties during the installation of the RDS Licensing role or the activation of the key, our expert team is available to guide you through the process until it is successfully resolved.

Can I reinstall or transfer this RDS User CAL to another server?

The license is perpetual and can be reactivated on the same server hardware if you need to reinstall the operating system. Transferring a volume license to entirely new hardware may be possible but often requires contacting our support team to assist with the Microsoft activation process.

Does this license work for users connecting from outside the EU?

Yes, the license is valid for activation on a server within the EU. The named users covered by the User CAL can then connect to that server from anywhere in the world, provided they have a network connection and the Remote Desktop client.

What payment methods does Lizensa accept?

Our Stripe-secured checkout supports a wide range of payment methods popular across Europe, including SEPA bank transfers, iDEAL, BLIK, Google Pay, and all major credit and debit cards like Visa and Mastercard.

Do you provide a VAT invoice for B2B purchases?

Yes, a detailed VAT invoice is automatically generated and included with your delivery email. For businesses with a valid EU VAT ID, the invoice can be processed with the reverse-charge mechanism, applying a 0% VAT rate on the transaction.

What is your refund policy?

As an EU-based retailer, we fully comply with EU consumer protection law. This provides you with a 14-day right of withdrawal from the date of purchase, offering a clear and enforceable refund guarantee that provides significant peace of mind.

How many devices can a single user access RDS from with this license?

A single RDS User CAL licenses one named user to access RDS resources from an unlimited number of devices. The user could use a desktop PC, a laptop, a home computer, and a mobile device, all covered under the same single license.

Do I need this license for administrative remote desktop connections?

No. Windows Server includes two built-in licenses for up to two concurrent administrative Remote Desktop sessions for management purposes. RDS CALs are required when you want to allow non-administrative users to connect for running productivity applications, hosting a shared desktop environment, or using VDI.