HTTPS streams not captured in auto mode - like YouTube.
To capture media streamed over https, JMR uses a built in proxy.
Check the following:
On Settings > Internet Downloads tab
1. Ensure the Monitor HTTPS/SSL is switched on
2. Ensure the correct Dialup/VPN connection is selected. If your not using a Dialup/VPN connection then this is normally DefaultLAN.
Windows Key + R, typing inetcpl.cpl in the Run box, and then press enter.
1. Internet Properties > Connections > LAN Settings > Proxy Server Advanced. Check the exceptions textbox does not contain your local IP address or an address range that does.