Rds Cal License Registry Key !!top!! | iPhone |
Close all active Remote Desktop (RDP) connections on the user's computer. Open regedit as an Administrator on the client machine. Go to HKLM\SOFTWARE\Microsoft\MSLicensing .
Right-click again and choose Delete . Confirm the deletion. Reboot the computer.
Right-click your Remote Desktop Connection client (mstsc.exe) and select . Connect to the RDS host. Running it as admin the first time gives the client permission to recreate the missing registry keys and write the new CAL token. Resolution 2: Fixing Registry Permissions
The most commonly referenced registry key regarding RDS licensing is the one that tracks the 120-day grace period. Once this period ends, users can no longer connect without a valid CAL.
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server\RCM\Licensing Core Value Name LicensingMode Data Values Per Device Specified License Servers rds cal license registry key
Understanding the RDS CAL License Registry Key: Location, Modification, and Troubleshooting
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server\RCM\Licensing Core Value Name: LicensingMode Data Type: REG_DWORD Data Values: 2 : Per Device 4 : Per User
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For domain-joined servers, RDS licensing settings can also be stored in Active Directory Group Policy Objects (GPOs). The relevant policies are located under: Close all active Remote Desktop (RDP) connections on
Always back up the registry (export relevant keys or create a system restore point) before edits.
On the RD Session Host or the RD Licensing Server, primary configurations and operational database paths are located here:
There are several critical registry keys used to manage RDS Client Access Licenses (CALs), depending on whether you are defining the licensing mode, specifying a license server, or managing the grace period. Registry Path Value Name
When you first install the RDS role, Windows grants a free 120-day licensing grace period. This period allows an organization to test the RDS environment without having to immediately purchase licenses. This grace period is tracked by a value inside this key, which usually begins with the string L$RTMTIMEBOMB . The default permissions on this key are designed to prevent modification, and changing it requires taking ownership of the folder. Right-click again and choose Delete
(invoke-cimmethod -inputobject (get-ciminstance -namespace root/CIMV2/TerminalServices -classname Win32_TerminalServiceSetting) -methodname GetGracePeriodDays).DaysLeft
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server\RCM\Licensing Core
For large deployments, leverage PowerShell to manage registry settings programmatically. Here are useful commands: