Network items not displaying since DO 11

Hi, I found that my network items (Ethernet printers, NAS, other computers, and so on) do not display anymore since upgrade to DO 11.0 :


Am I the only one (no trace of this problem at this moment in the forum).
Did I did somthing wrong ?
It was displaying networks items just minutes before the upgrade from DO10 to DO11.

Windows 8.1 x64

Oooops forget it.

Was a Windows problem.
I found that for some unknown reason (at leats unknown to ùe) the network discovery was disabled by Windows when i rebooted the computer to upgrade from DO 10 to DO 11.