Symptom: On Windows systems for Pro/ENGINEER Release 20 and later, the ptcstatus command returns the following message,

Displaying status for license file 77880@ptc Warning(-15): Cannot connect to license servers (-15, 10; 10061).

Cause: The license server is not running or the license client cannot reach the server.

Solution: Verify that the license server manager and ptc_d daemons are running. A network problem exists if a license client attempts to ping the server by host name and the ping fails.