I have a private domain. A client has joined the domain successfully. I can ping the client by IP and its name in both directions (from DC). I can browse the client by doing \\ClientName from DC. However when I try to open my Network places or network discovery on DC or any other machine, the client machine will not be listed. On the DC and Client: Firewall is off. Exceptions are checked. Network discovery is on. No 3rd party antivirus. DC is a 2008 server with latest updates. Clients are XP and windows 7. Since for a short time I was able to discover all machines including my clients, and now again I can't list the machines in network discovery, it might be setting, which is activated again. Any idea?