Rds Cal License Registry Key

Remote Desktop Services (RDS) Client Access License (CAL) system does not use a single "registry key" as a serial number. Instead, the registry is primarily used to manage the licensing mode , identify license servers , or reset the grace period 1. The "Grace Period" Registry Key

Within the Licensing Core key, look for a DWORD value named . You can alter this value to switch between the two primary RDS CAL models:

: DisableWorkgroupAuthEnforcement (REG_DWORD) set to 1 .

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

: This DWORD value determines the licensing type. 2 = Per-Device licensing mode. 4 = Per-User licensing mode. 5 = Not configured (uses the default grace period). 2. The RDS Grace Period Counter

A common administrative task involving the registry is resetting the . When a Remote Desktop Session Host is activated, it enters a grace period (usually 120 days) before it requires CALs. If this period expires and you are troubleshooting license installation, you may need to reset this timer.

To find which license servers the Remote Desktop Session Host (RDSH) is actively pointing to, check this path: Remote Desktop Services (RDS) Client Access License (CAL)

The RDS CAL (Remote Desktop Services Client Access License) registry key stores licensing-related configuration for RDS, particularly in licensing mode. Unlike Per Device CALs (tracked in the RD Licensing Manager database), Per User CALs are not automatically enforced by Windows — instead, the registry key helps track issuance and status on the RDS Licensing Server or session hosts.

"It’s the registry," whispered Sarah, the senior lead, appearing like a ghost behind him. "The server is looking for a map it can't find."

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 You can alter this value to switch between

Alternatively, modern versions of Windows Server prefer specifying this through the following path if set via policy: HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services Look for the string value: LicenseServers 💡 Best Practices for RDS License Registry Management

Right-click the key and select Export to create a backup file (.reg). Right-click the MSLicensing key again and select Delete .