Hello,
a couple of days ago I asked one of my collegues, who deal with Networking, to help me.
He started to uninstall many components (Network side) and at the end we uninstalled also the Mcafee Host Intrusion Prevention.
Then, only the Network components were installed again.
Now it seems working properly, finally!
My laptop is provided by my Company and the Windows build is much complicated!
Thanks for your effort, anyway!
Regards.
f.