Hi Jürgen,
Please note that we stopped developing & supporting the "HASP License Manager" component for several years now.
As you can see in «readme_nhsrvice_HASP_LicenceManager.pdf» last supported platform was Windows Server 2008 R2
Check that the service nhsrvice.exe is up and running, and check if it can be seen in Aladdin Monitor.
Note that it is normal that you HASP NET keys is not shown in the Aladdin Monitor, as on new setup, the key is only displayed after a license has been issued.
Note that the "HASP License Manager" is using port 475 UDP & TCP, so make sure these port are not blocked.
Possible issues:
1) The “nethasp.ini” is not found on the client machine or broadcast is used to found the server and your server is on a different LAN/VLAN.
2) The timing to find the server on the network is too short and the request does timeout before the server reply.
3) The port UDP 475 is not opened on the switch (between VLAN) or on the firewall of Server machine. Therefore the packets are lost and to not reach the server machine.
Regards,
Olivier