It appears they have some setting wrong on their downloads that are being blocked at the router level, if you have your router or firewall configured a certain way. May not work for everyone, but I bypassed my router and connected directly through my cable modem for my internet. The Turbo Tax update then appeared when I checked online updates and I was able to download it. It resolved the problem. Then reconnected my internet back through my router.
Worth a shot if you can't get anything else to work.
