Advertisements When I go to the VOD Screen on my TivoHD, it says I have a network problem. However, the unit sees my Tivo S2 on the network, sees my Tivo Desktop on my computer, and has no problem downloading the guide info. Also, my S2 sees my HD, and my desktop sees both the S2 and the HD. I can transfer shows between any of the three units. When I go to the HD network connections screen, the network status is fine, the network diagnostics show DNS test Success, but the Port Configuration test as FAILED. My HD is in the DMZ of my router and I have checked and ALL PORTS are open! I have rebooted everything many times. Tivo HD works fine except that I can't access any VOD. Any ideas?