I set up the home network with the wizard, ran the netsetup from the freshly created setup disk on the other computer and...
Nothing.
If I click on the "Arbeitsgruppencomputer anzeigen"; I get this:

Mid is my latest network name.
Anyone?
I just set it up, so I should be able to access it!
Even if I turn off the firewalls (Bitdefender), the result is the same.