TiVo has changed the way many of us watch TV (oh how I hate to stay in a hotel room now!). If you have two or more TiVos (Series 2 at least) connected to your home network, you can watch programs recorded on one TiVo from the other TiVo. Unless you get an error with the helpful message
Here are some tips to solve this problem.
While replacing an old Series 1 TiVo with a new Series 2, one of the first things I wanted to try was the multi-room viewing. In the guide, I received an error when I clicked on the name of the other TiVo. Growing up with computers in the 80s, I’m not unfamiliar with cryptic error codes, but nowadays programmers should be flogged!
A quick Google led to one possible solution at this forum thread that involves a voodoo-like fix: login to your tivo.com account, change the preferences on your TiVos (I have TiVo -> Manage My Account -> login -> DVR Preferences) by unchecking the box under Allow transfers and clicking Save Preferences. Once this is done, ask your TiVo to connect to the TiVo service (make a daily call) to download this new setting, then reset the Allow Transfers setting at tivo.com, save the preferences again, and repeat the daily call. To force a daily call, go to Messages & Settings -> Settings -> Phone & Network -> Connect to the TiVo service now.
Resigned to doing this (I was going to do it for both TiVos at the same time just to be sure), I started the process. However, when I got to the Network Connection screen to select the “Connect to the TiVo service now” option, I noticed in the “Last status” field a message that it was waiting for a restart because of a service update. Rather than go through the steps above, I forced the TiVo to restart (Messages & Settings -> Restart or Reset system). When it restarted, multi-room viewing worked. If you TiVo does not have a status message about a pending restart, this trick will probably not help with your multi-room viewing 0xffff error, but if it does, the restart solution is an easier one.