: Shows the configured licensing mode (Per User or Per Device) and the specific license servers assigned to a Session Host.
Server Manager > Tools > Remote Desktop Services > Remote Desktop Licensing Diagnoser remote desktop licensing diagnoser
While the error messages users receive can be vague, the underlying cause is usually structural. The Remote Desktop Licensing Diagnoser removes the guesswork, pinpointing exactly why the handshake between the Session Host and the License server is failing. For any administrator setting up a new RDS farm or troubleshooting sudden connection drops, running this tool should always be the first step. : Shows the configured licensing mode (Per User
Below is a with explanations.
The Licensing Diagnoser is a built-in administrative tool included in the Remote Desktop Services role. It acts as a specialized health checker for your RDS licensing infrastructure. Instead of manually digging through Event Viewer logs or Registry keys, the Diagnoser scans your environment to identify configuration issues preventing the RD Session Host from communicating with the RD License server. For any administrator setting up a new RDS
Here is the full explanation of the tool ( licdiag.exe / licensing diagnoser ), including how to run it, interpret its full report, and common issues it detects.