I upgraded to Windows 10, after which my MC19 no longer worked, even after being reinstalled. So, I bought MC21, which works fine. Then I downloaded the JRemote app onto my Iphone6. I've tried connecting to MC, and it keeps saying that it's found 2 IP addresses, each with the port 52199, and it shows 'timed out' against each. I have uninstalled McAfee. I have changed the inbound setting on Windows Firewall to allow 52199. I have turned off Windows Firewall. I have turned off the Media Server in MC, and turned it back on again, as suggested, and none of the above has enabled the JRemote to connect.