Within these paths, values such as LicenseMode (DWORD) determine whether the server enforces Per Device or Per User licensing. Other subkeys store unique license IDs, version information, and – historically – even temporary license certificates. When an RDS client connects, the server checks these registry values to verify that a valid CAL is available.
Whenever possible, use Group Policy Objects (GPOs) to assign license servers and licensing modes (Per User or Per Device) rather than hacking the registry manually. GPOs are easier to audit and replicate.
: Resetting the GracePeriod registry key is a temporary fix. It does not replace the requirement to purchase and install legitimate RDS CALs. rds cal license registry key
Back in the Permissions window, select the Administrators group and check the box to allow . Click OK .
While it is highly recommended to configure your RDS Licensing Mode (Per-User or Per-Device) and License Server parameters using Group Policy (GPO) or PowerShell, you can also hardcode these values directly into the server's registry. Within these paths, values such as LicenseMode (DWORD)
HKLM\SYSTEM\CurrentControlSet\Services\TermService\Parameters\LicenseServers SpecifiedLicenseServers
On the RDS server itself, the registry is where administrators can verify and force critical operational states when the GUI tools are unresponsive. Whenever possible, use Group Policy Objects (GPOs) to
If you need the Windows Registry location used by Remote Desktop Services Client Access Licenses (RDS CALs), the relevant key for the Remote Desktop Licensing Grace Period and licensing configuration is: