I have a Mac Mini setup as my local server. It's running the latest version of Yosemite (10.10.5) and latest version of OS X Server (4.1.5). Everything worked fine until a few weeks ago when it stopped letting me connect to it's shared drives from other macs on the network. When I open Finder from another Mac, I see the Mac Mini in the shared list. When I click on it, I see "Connecting..." then a few seconds pass and it says "Connection Failed". If I click on "Connect As...", I get a popup window that says: "There was a problem connecting to the server "XXXX". Check the server name or IP address, and then try again. If you continue to have problems, contact your system administrator." If I go to the server and attempt to connect to other mac's shared resources, it works fine. Also, I have Plex running on this server and have no issues connecting to Plex from any other mac on the network. Is there a good document out there on how to troubleshoot an issue like this?