Registry Key — Rds Cal License

key can reset the timer. This requires taking ownership of the key and granting "Full Control" permissions to the Administrators group. Resolving Certificate Errors:

Example (PowerShell view):

Understanding the specific registry paths, keys, and values associated with RDS CALs is critical for system administrators tasked with troubleshooting activation issues, backing up licensing databases, or resetting grace periods. The Primary RDS CAL Registry Paths

and select Manage Licenses .

By default, Windows Server allows a 120-day licensing grace period during which users can connect without a valid CAL. If the grace period expires before you successfully configure your licensing server, connections will block with a "No Remote Desktop License Servers Available" error. Share public link

Doing so will completely break Remote Desktop Services, requiring a repair installation or full server rebuild.

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\TermServLicensing\Parameters rds cal license registry key

On the RD Session Host or the RD Licensing Server, primary configurations and operational database paths are located here:

Configuring the License Server and Licensing Mode via Registry

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server\RCM\Licensing Core key can reset the timer

RDS configuration is primarily handled within HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server\RCM\ .

Warning: Modifying the Windows Registry incorrectly can cause severe system instability. Always back up your registry keys before making changes. The MSLicensing Key (Client-Side)

\HardwareID : Contains unique hardware cryptographic identifiers for the machine. The Primary RDS CAL Registry Paths and select