I ran into something similar because the DVR would change it's TCP/IP Address and not udate the forwarding rule in my Router via UPNP. I was able to make my STB use a Static Address with a DHCP Reservation and then enabled and re-enabled the remote dvr feature on the STB to update the Forwarding Rule and it has been ok ever since.
To make the DHCP Reservation on the Actiontec:
Thanks for your quick reply. I make the box's IP address static and re-enable DVR remote access. Unfortunately the original problem remains. 😞
FWIW, I have Remote DVR working just fine for me, and I have never set the DVR to use a static IP address. I don't believe it is necessary unless perhaps you have done some major surgery on how the router manages your LAN. I suggest you again reset the router back to the defaults and work from there.
I also use OpenDNS, that should have absolutely nothing to do with the problem.
When you say your STBs are displayed correctly, what do you mean, do you just see all of the STBs or does the DVR also display the used space graphic? When I click on My Set-Top Boxes I not only see all of the boxes but I also get the graphic showing the used space, and a checkmark indicating that Remote DVR is enabled.
Have you tried pulling the electrical power from the DVR for 15-20 seconds and then see if it works? The Verizon STBs sometimes just seem to have a mind of their own and don't do what they are supposed to until power has been removed.
If pulling the power and resetting the router again don't fix it I think you need to call Verizon tech support and have them do a complete reset of the DVR. I have never had that done, but I think it deletes all of your recordings, any Favorites you have set up, etc, so this would probably be the last resort before asking for a replacement the DVR.
Despite your experience, the Remote DVR function does work pretty well, at least most of the time. Occasionally I will get an error message, a time-out or something; when that happens I just wait a little while and try again, it usually works the next time.
Verizon FiOS TV, Internet, and phone
QIP6416, IMG 1.6.2, Build 08.58
Keller, TX 76248