I have MC 23.0.94 (64 bit) installed on a Win7 PC. PC and Denon are both attached via ethernet cable to my home network. (Denon via a hub in the living room). Music plays fine on my local PC speakers (using "Player") but when I select the Denon device under "Playing Now" menu and try to play something I get error "There was a problem controlling the selected DLNA device. Double-check your device, server, and network settings." IP address of Denon is correct in MC. (Playing on the Denon worked before but I have not tried it recently.) I can right click on Denon and I can get to the Denon device setup page so I know MC can reach the device on the network. I have downloaded and run the Whitebear Renderer Tests but am not fully sure how to interpret the results. I have looked at network sharing->Media streaming options and the Denon is set to be allowed for all media types. I also looked at the Windows firewall settings and everything starting with Media Center is allowed. I have rebooted the computer. I am not sure what to look at next. Hope I get some direction here. Thanks.