Must have been something going on somewhere in the remote windows machine. After not working for a couple hours --- now it is working. Did not reboot. No Clue. I hate it when this stuff happens. I like to know the exact cause.
I am new to UnRAID so this might be me...
I updated to 6.6.6 and now I can't get to the unRAID GUI from a windows machine by typing "Tower" in the browser. I can get there with an IP address. Don't know if I did something else somewhere. As I mentioned, still learning.