Rds Cal: License Registry Key

To help troubleshoot your specific deployment, could you share your RDS host runs, whether you are using Per User or Per Device CALs, and the exact error message your users see? Share public link

SpecifiedLicenseServers (Multi-String) — Contains the list of license servers. 2. Reset RDS Grace Period

While registry editing is useful for troubleshooting, the correct way to add licenses is through the tool. Open the Remote Desktop Licensing Manager . rds cal license registry key

Remote Desktop Services (RDS) relies on Client Access Licenses (CALs) to legally and technically allow users or devices to connect to a Windows Server host. When RDS CALs are issued, tracked, or temporarily assigned, the underlying configuration and operational data are stored directly within the Windows Registry.

The RD Licensing Diagnoser shows a "No license server available" error despite correct settings. To help troubleshoot your specific deployment, could you

Located at HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server\RCM\Licensing Core , the LicensingMode DWORD sets the mode (2 for Device, 4 for User). License servers are specified under HKLM\SYSTEM\CurrentControlSet\Services\TermService\Parameters\LicenseServers . 2. Group Policy and Troubleshooting License Remote Desktop session hosts | Microsoft Learn

Remote Desktop Services (RDS) relies on Client Access Licenses (CALs) to legally and technically permit users or devices to connect to a Windows Server host. When licensing issues arise—such as connection errors, grace period expirations, or corrupted databases—system administrators must dive into the Windows Registry to troubleshoot. Reset RDS Grace Period While registry editing is

The grace period is a 120-day window during which an RDS host accepts connections without a valid license server. The registry holds a binary value named GracePeriod (or sometimes MSLicensing in older builds). Deleting or modifying this key can reset the grace period, but this is in production except as a last resort.

Navigate to: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server\RCM\Licensing Core

This command deletes the entire GracePeriod key, effectively resetting the 120-day trial period.