I have an extensive LAN that comprises of three Windows 7 machines, one Synology NAS server and two Linux Ubuntu 14.04 servers.
I can no longer see either the NAS storage, or both Linux systems from any of the three Windows 7 systems. This is mystery problem that once surfaced almost a year ago, but just as mysteriously, the problem disappeared. However, it back again!!
The only way to see the NAS or the Linux system under Windows 7's Windows Explorer "network" icon is for me to go to the Explorer's address bar and enter: "\\<hostname>. And, then that host will appear in the network list. If I kill the Explorer and relaunch, the same problem is still there.
Nothing has changed other than the regular windows updates.
This is an aggravation as every time some process in Windows 7 wishes to open or save a file, my non Windows 7 network devices don't appear. Sometimes the "file selection" panel will allow me to enter the \\<hostname>.
Any ideas what this can be?