Close

Client Logins

To find which license servers the Remote Desktop Session Host (RDSH) is actively pointing to, check this path:

Understanding the specific registry keys associated with RDS CALs is essential for system administrators tasked with troubleshooting activation issues, resetting grace periods, or migrating license servers. Where is the RDS CAL License Registry Key Located?

The RDS CAL license registry key plays a critical role in ensuring compliance and smooth operation of RDS environments. By understanding the different types of RDS CALs, managing license registry keys effectively, and troubleshooting common issues, organizations can ensure that their RDS environment remains secure, compliant, and efficient.

Understanding the RDS CAL License Registry Key: A Complete Technical Guide

Within the same RCM key, the LicensingMode DWORD value should be set to 2 for Per Device CALs or 4 for Per User CALs. If the value is missing, you can create it manually. For additional flexibility, administrators can configure redundant license servers by adding a comma-separated list of server names via GPO or registry.

Before modifying any licensing keys, it is standard practice to export the registry subkey

Navigate to: HKLM\SYSTEM\CurrentControlSet\Control\Terminal Server\RCM\Licensing Core Locate the LicensingMode DWORD value.

Knowing these parameters will allow me to provide targeted script commands or specific Group Policy paths to match your current infrastructure. Share public link

You must first take ownership and grant yourself "Full Control" permissions for this key. Once done, delete the L$RTMTIMEB... binary value inside.

Subkeys beneath this path (such as HardwareID and Store ) validate the client's identity and hold the temporary or permanent CAL tokens issued by the licensing server. 2. How to Reset the 120-Day RDS Grace Period

Modifying RDS licensing registry keys is often required during server migrations, license resets, or when Group Policy Objects (GPOs) fail to apply configuration settings correctly. Forcing the Remote Desktop Licensing Mode

A restart is required for this change to take effect and for the server to reach out to the specified license server. 4. Verify Activation

: These store the encrypted local tokens. If this local cache becomes corrupted, the client will receive a "Remote session disconnected because there are no Remote Desktop License Servers available" error. 🔄 How to Reset the 120-Day RDS Grace Period

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\TermService\Parameters\LicenseServers

A binary value that counts down the 120-day grace period.

The operational configurations for the Remote Desktop service reside here: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\TermService\Parameters

rds cal license registry key