On firmware 1.98 since April 4, 2017. Pandora was working initially on my RX-V773 on this firmware release but quit working in recent weeks with the 'Access Error' and 'No network found' messages, even though vTuner continued to work. My receiver was already on a static IP address from the router end. As suggested elsewhere, I got Pandora access restored by going into the receiver Setup, Network, IP address section and disabling DHCP. I then manually entered the receiver's static IP address, the router's subnet mask and gateway address, and changed the primary and secondary DNS servers from '0.0.0.0' to the Google '184.108.40.206' and '220.127.116.11', respectively. Pandora access was immediately restored.