First of all, thanks for the many replies. This is truly the best response I've gotten when using an online forum. I followed the trail of the Windows Firewall and I found there is a group policy that was controlling the network addresses allowed to access Remote Desktop on certain PCs. Not sure why that was applied to Windows 10 machines only but that appears to be the case right now. A small adjustment to this and I am away to the races. Thanks.
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