Cannot Remote From Win 10 Laptop into Win 8.1 Laptop

You're welcome :)

Hello again folks. Thought this was solved and the reason I could not RDC from Win 10 to 8.1 was because I did not have Pro. Well, now I do have pro and the problem is the same. What I have established is the following

Win 10 will remote into Win 7 computer
Win 7 will remote into both Win 8.1 computer and Win 10 computer
Win 8.1 will remote into both Win 7 and Win 10 computer
Win 10 will NOT remote into Win 8.1 computer

I just paid over 100 dollars for the upgrade for this feature and the one computer I need to connect to 8.1 won't. It will find the computer but not accept the credentials. Any other thoughts (now that I actually have pro) would be most appreciated..

What log-on do you use? I use my Microsoft account (xxxxxx@outlook.com) as the user and it connects fine from 10 to 8.1 Pro.

Are you using this description of your user or DOMAIN/user or just your user? Are they part of the administrator group or authorized on your 8.1 machine?

You could try adding your client user as described here Enable, Disable Remote Desktop Connection in Windows 8.1 but if you are using the same client user as when you RDP from 7 it should be OK.