No, I can't start it at standalone mode either. My question is how I can know that the information in the license file (MAC address) is correct. I wonder if I have given wrong MAC address when requesting the license file from Ansys. If you see in my first post above, I have two MAC address on my computer and I gave Ansys the second one to obtain the license. Is it possible that the license was issued for the second MAC address, but Rocky needs the first MAC address to verify the license and run?