Set up a small lab to troubleshoot the issue you are seeing. Get a small network switch which will cost you a few $ and a couple of ethernet cables. Go into the network settings of each computers network adapter (see many internet tutorials if your unsure how to do this) and set an IP address of 192.168.0.100 subnet 255.255.255.0 default gateway 192.168.0.1 and for the other computer repeat the settings other than the IP address of the second computer 192.168.0.101
Connect each computer to the switch with the ethernet cables and power the switch on. You have now set up a small trouble shooting network each computer on its own IP address but connected together on the same network LAN.
Turn the firewalls off on each of the computers (look on internet how to do this if not sure) then from each computer ping the other IP address you should get a response- just open up a command prompt and type ping 192.168.0.101 if your on the first computer -this tells you your nearly in business.
On each computer go the control panel system and select the settings shown. You can turn off the second tick box if you experience authentication difficulties.
From any of the computers open up a command prompt and type mstsc and press enter
This will prompt you for a box to enter the logon credentials of any of the computers you are trying to reach so on your first computer to reach the second you would type 192.168.0.101 you will also need the admin account and password of the computer you are trying to reach- see second capture.
If you type your connection credentials & password correctly you will be able to get into your windows 10 computer via RDP which is the connection method being demonstrated.
When this works on the bench you can then extend your network with either the switch with longer cables or a wifi connection- whatever works best. The same principles will also work for wireless connection- after all its only a network without a wire. On my system at home I have a server in the garage connected to a wi-fi repeater which allows me to reach my garden telescope from my warm office- great for the winter.
Good luck with your testing
Edited by pyrasanth, 19 November 2020 - 05:22 PM.