If you have issues connecting to your Kali Linux VPS with Windows RDP this is probably due to multiple reasons:-
The following are some of the issues and what you can do to fix them.
To resolve you need to ensure you are NOT logged in via the console. To use RDP you need to either logout of the VPS console or reboot your machine.
If you have configured the firewall you will need to ensure you have allowed traffic to the Windows RDP port which is 3389.
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