Once installed, the license server will begin issuing licenses to clients Alibaba Cloud . 4. Tracking and Auditing RDS CAL Usage
HKLM\SYSTEM\CurrentControlSet\Control\Terminal Server\RCM\Licensing Core
Reboot the RD Session Host server to initialize a fresh 120-day evaluation counter. 4. Fixing Client-Side CAL Corruption (MSLicensing)
If you are managing the itself:
Remote Desktop Services (RDS) relies on a licensing server to issue Client Access Licenses (CALs) to users or devices connecting to a session host. When connection anomalies or licensing errors occur, system administrators often need to inspect, modify, or clear the RDS CAL data stored within the Windows Registry. This article explores the critical registry paths used by RDS CALs, how the operating system utilizes them, and how to troubleshoot common licensing issues. 1. The Per-Device CAL Registry Path (Client-Side)
HKLM\SYSTEM\CurrentControlSet\Control\Terminal Server\RCM\Licensing Core Use code with caution.
Reboot the RD Session Host to trigger a refresh of the licensing clock or force connection to your deployed license server. 3. Server-Side Licensing Mode and Server Assignment Keys rds cal license registry key
: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server\RCM Function : Stores core licensing configuration for RDS including the LicensingMode value:
If you are experiencing specific error messages or need to know how to migrate licenses to a new server, I can help you with:
There are several critical registry keys used to manage RDS Client Access Licenses (CALs), depending on whether you are defining the licensing mode, specifying a license server, or managing the grace period. Registry Path Value Name Once installed, the license server will begin issuing
: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\TerminalServer Function : Controls multiple RDP session restrictions for single-user accounts via fSingleSessionPerUser :
Remote Desktop Licensing (RD Licensing) manages the issuance of CALs. When a device connects to an RD Session Host, the License Server issues a temporary or permanent CAL. This license is cryptographically bound to the hardware ID of the device.