Looking at the message, you are not using the right NIC card address for the server.
Run PTCHOSTID and see if the NIC card matches the NIC address in your license file.
Thanks for the quick answer!
I am not able to open the file "ptchostid"
I got a license from school that i also can use the application "welding" at creo parametric 1.0.
Can i use this license and will work it and how i must write in it?