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Windows Server 2019 Remote Desktop Services 50 User CAL: Authorize 50 Users or Devices to Use Remote Desktop Services
Microsoft Windows Server 2019 RDS User CAL Remote Desktop Services 50 User CAL adds 50 User Client Access Licenses to your existing Windows Server 2019 Datacenter deployment. An RDS CAL grants a single user (User CAL) or a single device (Device CAL) the right to open Remote Desktop sessions against an RDS session host. Your key is delivered to your account dashboard within seconds of payment clearing, ready to paste into the Remote Desktop Licensing Manager. If the key fails to activate for any reason within 7 days, you get a one-to-one replacement key or a full refund — your choice, no questions asked. Activate the CAL pack on your Remote Desktop license server and start assigning licenses within minutes. 🖥️🔧
What Is Included and How Activation Works
This listing provides a single product key for Windows Server 2019 Datacenter Remote Desktop Services 50 User Client Access Licenses. The key is used to add 50 User CALs to your existing Windows Server 2019 deployment. Each CAL grants a single user (User CAL) or a single device (Device CAL) the right to open Remote Desktop sessions against an RDS session host running Windows Server 2019 Essentials or a compatible earlier version.
The CALs are not a stand-alone server license. The product key assumes you already have a properly licensed Windows Server 2019 Standard Datacenter, or Essentials installation with the Remote Desktop Services role enabled. The CALs are installed, issued, and tracked by a Remote Desktop Licensing (RD Licensing) server, which may be the same physical server as the session host or a dedicated license server in your environment. There is a 120-day grace period after enabling Remote Desktop Services before the license server is required to issue CALs.
Key Features and Capabilities
The 50 User CALs in this listing provide the following Remote Desktop Services authorization rights:
- 50 User CALs: Add 50 permanent Remote Desktop Services Client Access Licenses to an existing Windows Server 2016 Datacenter 2019 deployment
- User Licensing Model: A User CAL assigns one license to a named user, who can then open Remote Desktop sessions from any device. This model is generally the most cost-effective when one person needs to connect from a desktop, a laptop, a tablet, and a phone, or when the user count is smaller than the device count.
- RD Licensing Server Compatible: Install the CALs on a Windows Server 2019 or compatible earlier Remote Desktop Licensing server
- Perpetual License: CALs are issued as permanent licenses and are renewed automatically as long as the license server is reachable
- Compatible with Windows Server 2019 and 2022: Use these CALs to access Windows Server 2019, 2022, or 2025 session hosts (per Microsoft Version-Forward rule)
- Standalone Server Support: Authorize Remote Desktop sessions on a single server, a farm, or a virtual desktop infrastructure (VDI) deployment
- Audit Trail: Track issued CALs through the RD Licensing Manager console and the PerUser or PerDevice report
- No Hardware Lock: CALs are not bound to a specific device or motherboard and may be reassigned to other users or devices subject to the 90-day reassignment rule
What's New in Windows Server 2019 Remote Desktop Services
Compared with earlier releases, Windows Server 2019 adds the following Remote Desktop Services improvements:
- Remote Desktop Protocol (RDP) 10.x: Bidirectional RemoteFX USB redirection, H.264/AVC 4K video encoding, and dynamic resolution scaling
- RemoteApp and Desktop Connection: Publish individual applications and full desktops through a web portal or a Workspace connection
- Connection Broker: Distribute session load across an RD Session Host farm with reconnection to existing sessions
- RD Gateway: Encapsulate RDP inside HTTPS to allow Remote Desktop sessions over the public internet without a VPN
- RD Web Access: Provide a browser-based portal where authorized users can launch RemoteApps and desktops
- High Availability: Deploy RD Connection Broker and RD Licensing in a failover cluster for resilience
Who This Edition Is For
- Small and medium businesses that have an existing Windows Server 2019 deployment and need to authorize 50 additional users or devices to use Remote Desktop Services
- Remote and hybrid workforces that connect to a centralized Remote Desktop Session Host farm through RD Gateway and RD Web Access
- Software vendors and outsourced IT providers that host customer applications on RDS session hosts and license each customer user or workstation
- Educational institutions and training centers that run shared lab devices and benefit from per-device user licensing for short-term users
- Compliance-driven organizations that must demonstrate that all RDP connections are properly authorized by an issued RDS CAL
System Requirements
Remote Desktop Services runs on a properly licensed Windows Server 2019 Standard, Datacenter, or Essentials host with the Remote Desktop Services role enabled. A Remote Desktop Licensing server (which may be the same host or a dedicated server) is required to install and issue the CALs. The following are the minimum requirements for the licensing server:
| Component | Minimum Requirement |
|---|---|
| Processor | 1.4 GHz 64-bit processor with NX/DEP, SLAT, CMPXCHG16b, LAHF/SAHF, PrefetchW, SSE4.2, POPCNT |
| RAM (Server Core) | 2 GB (Server Core) |
| RAM (Desktop Experience) | 4 GB minimum for Desktop Experience, 8 GB recommended for virtualized deployments |
| Hard Disk Space | 32 GB minimum (160 GB with a 60 GB system partition for Essentials) |
| Network Adapter | Gigabit Ethernet adapter (10/100/1000baseT PHY/MAC), PCI Express compliant |
| TPM | TPM 2.0 (required for certain security features) |
| Firmware | UEFI 2.3.1c-based firmware with Secure Boot support (required for certain features) |
| Display | Super VGA (1024 × 768) or higher (Desktop Experience only) |
CAL Type and RD Licensing Server
A User CAL assigns one license to a named user, who can then open Remote Desktop sessions from any device. This model is generally the most cost-effective when one person needs to connect from a desktop, a laptop, a tablet, and a phone, or when the user count is smaller than the device count.
CALs are installed, issued, and tracked by a Remote Desktop Licensing (RD Licensing) server running a compatible version of Windows Server. A 120-day grace period applies after you enable Remote Desktop Services before the license server is required to issue CALs. If you have a perimeter network, you can place the license server behind a firewall and use RD Gateway for encrypted RDP traffic over TCP/443 or UDP/3391.
Activation and Licensing Notes
An RDS User CAL is installed on a Remote Desktop Licensing server running Windows Server 2019 or a compatible earlier version. After the license server is activated, it issues a temporary CAL to each user or device the first time it connects, and upgrades the temporary CAL to a permanent CAL after the connection is confirmed. Permanent per-user CALs are valid for 60 days and renew automatically. Permanent per-device CALs are valid for a random 52 to 89 days and renew automatically as long as the license server is reachable.
This product is a User CAL, not a User CAL or Device CAL. The two types are not interchangeable. A User CAL may not be reassigned to another user more frequently than every 90 days; a Device CAL may not be reassigned to another device more frequently than every 90 days. If your licensing model needs to switch, you will need to purchase the other CAL type and reassign according to the new rules.
The CALs in this listing are tied to the Windows Server 2019 family. They may be used against any earlier Windows Server version's session hosts. A future (newer) version of the Windows Server RDS CAL may also be used against Windows Server 2019 session hosts, per Microsoft's version-forward rule.
Get Started With Windows Server 2019 Remote Desktop Services 50 User CAL
After purchase, you will receive a 25-character product key. Open RD Licensing Manager on your Remote Desktop Licensing server, right-click the server, choose Install Licenses, select your licensing program (Volume Licensing or other), and enter the product key. The 50 User CALs are added to the license server's pool and are issued to clients automatically as they connect.
Microsoft Windows Server 2019 RDS User CAL Alternatives
Three credible alternatives cover most server workloads depending on your requirements.
Linux Server (Ubuntu LTS or RHEL)
Free or low-cost, runs most modern web, container, and database workloads, and is widely supported by cloud providers.
Windows Server on Azure / AWS / GCP
Managed cloud versions of Windows Server with pay-as-you-go licensing. Removes the need for an on-premises licence key.
Windows Server LTSC container images
Microsoft-published container images for development and CI/CD scenarios. Free for development but require a licence for production use.
How to choose: Stay on Windows Server if you run Active Directory, SQL Server, Exchange, or .NET Framework line-of-business apps. Move to Linux server for new web and container workloads. Move to cloud-managed Windows Server to remove licence management overhead.
Frequently Asked Questions
Does an RDS CAL replace the Windows Server CAL?
No. A Windows Server Client Access License (CAL) and a Remote Desktop Services CAL are both required for users or devices that connect to a Remote Desktop session host. The Windows Server CAL grants access to the server itself, while the RDS CAL grants the right to use the Remote Desktop Services functionality.
What is the difference between a User CAL and a Device CAL?
A User CAL assigns one license to a named user who can connect from any device. A Device CAL assigns one license to a specific device that any user can use to connect. Per-user is usually more cost-effective when one person uses multiple devices; per-device is usually cheaper when many users share a smaller number of shared workstations.
Can I install this CAL on any version of Windows Server?
RDS CALs follow a version-agnostic-forward rule. The CAL must be the same version as the server the user is connecting to, or newer. A Windows Server 2022 RDS CAL can be used to access Windows Server 2019 and 2022 session hosts, for example, but a 2019 RDS CAL cannot access a 2022 session host.
How many CALs are included with one purchase?
This listing adds 50 Client Access Licenses to your existing Windows Server. Each CAL can be assigned to a single user or a single device, depending on the type you selected (User CAL or Device CAL).
Do I need a Remote Desktop Licensing server?
Yes. RDS CALs are installed, issued, and tracked by a Remote Desktop Licensing (RD Licensing) server that runs on a compatible version of Windows Server. A 120-day grace period applies after you enable Remote Desktop Services before the license server is required to issue CALs.
Can RDS CALs be reassigned to a different user or device?
Per the Microsoft Product Terms, a CAL may be reassigned to another user or device no sooner than 90 days after the most recent assignment. Permanent CALs are issued for a randomly selected period of 52 to 89 days and renew automatically as long as a license server is available.
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