Well, I guess I can reply to my own question... since the December 11th Windows update, if TLS 1.2 is turned on in IE settings, Web Connect Express won't form a secure connection with the server thus effectively failing downloads for all FIs that use this. However, turning off TLS 1.2 Advanced option bypasses the problem.
-- John
Anyone else having any problems? All my webconnect FIs no longer download with the CC-899 error. My guess is that some common site that WebConnect uses for all FIs is not handling a secure connection properly but that's just a guess.