This is the most critical location for troubleshooting "The remote session was disconnected because there are no Remote Desktop client access licenses available" errors.
New-Item -Path "HKLM:\SYSTEM\CurrentControlSet\Control\Terminal Server\Computers" -Name "LicenseServers" -Force New-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Control\Terminal Server\Computers\LicenseServers" -Name "SpecifiedLicenseServers" -PropertyType MultiString -Value "licsrvr.yourdomain.local" Use code with caution. Summary Configuration Reference Table Target Path Recommended Value ...\RCM\Licensing Core LicensingMode REG_DWORD 2 (Device) or 4 (User) Target License Server ...\Computers\LicenseServers SpecifiedLicenseServers REG_MULTI_SZ FQDN of License Server Reset Grace Clock ...\RCM\GracePeriod
Stores the actual digital license token issued by the RDS License Server to that specific hardware endpoint. How to Reset the RDS Grace Period via Registry rds cal license registry key
Navigate to: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server\RCM\LicenseServers
management handle three main functions: defining the licensing mode, identifying the license server, and managing the 120-day grace period. 1. Licensing Mode and Server Configuration This is the most critical location for troubleshooting
The path is:
Note: This key is protected by strict system permissions. Even local administrators cannot modify or delete it without explicitly taking ownership of the key first. 3. Client-Side Cached CAL Keys (Hardware ID) How to Reset the RDS Grace Period via
The most important registry key for an RD Session Host to find its license server is:
Path: HKLM\SYSTEM\CurrentControlSet\Control\Terminal Server\RCM\SpecifiedLicenseServers Value: "LS1.domain.local" "LS2.domain.local"
The Licensing Server issues the token, and the client writes this new data directly into the MSLicensing registry key. Common Issues and Troubleshooting