Rds Cal License Registry Key
If your RDS grace period has expired, you can reset it by deleting the "Timebomb" key. This is typically done for testing or lab environments.
On the RD Session Host side, the operating system tracks how it discovers the licensing server and what mode it operates under. These settings are governed by specific registry keys, which are often mirrored or enforced via Group Policy Objects (GPOs). The TermService Parameters
Microsoft provides a built-in 120-day grace period during which an RDS Session Host can accept client connections without a validated License Server. Once this grace period expires, connections are blocked until a valid license server is configured. The GracePeriod Key rds cal license registry key
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server\RCM Use code with caution. Key subkeys within this path include:
: On a client machine, you can check HKEY_LOCAL_MACHINE\Software\Microsoft\MSLicensing to see cached license information issued by the server. License Remote Desktop session hosts | Microsoft Learn If your RDS grace period has expired, you
What is your RDS environment running? Are you using Per User or Per Device CALs?
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MSLicensing These settings are governed by specific registry keys,
Corrupted X509 certificates can prevent licensing. Deleting the Certificate X509 Certificate X509 Certificate ID X509 Certificate2 values under
This key tracks the 120-day grace period. If it expires, users get kicked out. Many admins in lab environments delete this key to "reset" the clock, though Microsoft warns this isn't for production use. 🚦 Pro-Tip: When to Use Them
A binary entry that tracks the remaining time in the 120-day licensing grace period. 3. Common Administrative Actions via Registry