Look for the value GracePeriodRunning . If it equals 1 , your grace clock is ticking.
Microsoft provides a to allow you to deploy and test your RDS environment without purchasing CALs immediately. During these 120 days, the registry allows unlimited connections. rds cal license registry key free
The promise is seductive. A simple regedit tweak, a key deletion, or a script that claims to reset the licensing counters "for free." But does such a key actually exist? And if it does, should you use it? Look for the value GracePeriodRunning
| Registry Path | Key Value | Purpose | | :--- | :--- | :--- | | HKLM\SYSTEM\CurrentControlSet\Control\Terminal Server\RCM | LicensingMode | = Per User, 2 = Per Device | | HKLM\SYSTEM\CurrentControlSet\Services\TermService\Parameters | Certificate | Stores the SSL cert for RDS connections | | HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Terminal Server\Licensing Core | LSERVER_ACTIVE | Tracks if a licensing server is designated | | HKLM\SYSTEM\CurrentControlSet\Services\LanmanServer\Parameters | Users | Required SMB tweak for legacy RDS | During these 120 days, the registry allows unlimited
None of these keys contain a "magic free counter." Microsoft has moved licensing intelligence into the sppsvc (Software Protection Platform) service, which cannot be tricked by simple DWORD changes. 6. The Real "Free" Options (Legal & Safe) If you absolutely cannot pay for RDS CALs, do not hack the registry. Instead, use these legitimate alternatives: Option A: The 2-User Limit (Built-in Free) Windows Server allows up to 2 concurrent administrative connections without any CALs. You do not need a registry key for this. If you only need remote access for 2 admins, you are already compliant. Use mstsc /admin to connect. Option B: Switch to Windows 10/11 Pro If you have 5 users, buy them Windows 10/11 Pro workstations. Windows Pro allows 1 remote session natively (Remote Desktop). Combined with Quick Assist or a free VPN, you avoid the RDS CAL ecosystem entirely. Option C: FOSS Alternatives (No Windows RDS) Deploy Apache Guacamole (free, open-source) on a Linux VM. It proxies RDP, VNC, and SSH. Guacamole bypasses the Windows licensing broker entirely because the Windows Server only sees the localhost connection, not the external user. (Check compliance: This is a gray area, but technically the Windows Server isn't licensing the remote user; Guacamole is.) 7. Step-by-Step: Checking Your Current RDS License Status (No Hack) Before you search for a "free registry key," diagnose your actual problem. Open PowerShell as Administrator: