I have a TS-1.6TGL/R5 that I inherited. Yes, very old. Out of the blue, I was not longer able to connect to it from my desktop. I could see it through the IP and even ping it but could not access the drive itself. I would run windows diagnostic and get "The remote device or resource won't accept the connection". I'm not a technical person so I eventually called support. Even though this is WAY out of warranty, they tried to help. We were not able to resolve the issue but did determine it was a Windows issue and not the Terrestation because tech said I should try another computer. I was able to connect from my laptop. I share this because I found a tread on here that did not seem to solve the issue and because it would be nice to get suggestions on how I can resolve my Windows issue on my desktop. My lappy is also old and don't want to have to rely on it.
BTW, this also prompted me to get a backup to the backup. It was pretty easy to hook up a USB drive directly to the terrastation and run the backup process. Yes, backup to the backup. Hope this helps someone.