Rds Cal License Registry Key [DIRECT]

Modifying the Windows Registry comes with inherent risks. Always follow these rules before making any changes:

Check the box to "Replace owner on subcontainers and objects" and click Apply. Grant the Administrators group .

When a new RD Session Host is deployed, Microsoft grants a 120-day licensing grace period during which clients can connect without a valid CAL. Once this period expires, users will face connection blocks accompanied by licensing errors.

Understanding the RDS CAL License Registry Key: A Complete Technical Guide rds cal license registry key

The licensing process involves a coordinated exchange between client and server using these registry keys:

$obj = gwmi -namespace "Root/CIMV2/TerminalServices" Win32_TerminalServiceSetting $obj.GetSpecifiedLicenseServerList() $obj.LicensingType

If a client cannot connect due to “no license available” but should have one, delete the MSLicensing key (after backup) and reconnect. Modifying the Windows Registry comes with inherent risks

When a client device connects to an RDS Session Host, the server issues a temporary or permanent CAL. This license is stored directly on the client machine's registry. The MSLicensing Key

Note: Always restart the server after making registry changes to apply new licensing configurations. Guidance for troubleshooting RDS Licensing - Windows Server

When users report "No CALs are installed or issued on this License Server" or the session host suddenly stops allowing logins, the registry is often the culprit. When a new RD Session Host is deployed,

Configures the server to use Per-Device licensing.

Manually changing registry keys on individual session hosts can cause configuration drift. Use Group Policies ( Computer Configuration > Policies > Administrative Templates > Windows Components > Remote Desktop Services > Remote Desktop Session Host > Licensing ) to enforce these settings cleanly across environments.

Right-click the binary registry value inside the folder (usually starts with L$RTN ) and click .