Navigate to the following path: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server\RCM\Licensing Core
I can provide specific terminal commands or step-by-step wizard paths based on your exact setup. Share public link how to find rds license key
If your RDS CALs were purchased through a Volume Licensing agreement (Open, Select, EA, MPSA): how to find rds license key