I have a 2012 r2 virtual server on VMware running IIS. IIS randomly stops responding. If I'm off site all I have to do is remote into the server and IIS starts responding so I'm not sure if it is an issue with IIS or some other issue. Obviously the server isn't none responsive since I can remote into it. I don't have to interact with IIS only remote into the server to get the web pages to come up.