Google Compute Engine - Allow port 3389 on GCP and Firewall but still blocked

Question

I have a virtual machine (Windows Server 2019) running on Google's Compute Engine and I need to allow port 3389 to Remote Desktop Connections but I have allowed it on GCP and firewall but it still blocked. I've been trying to fix the problem for days. What could be happening? image of the rules below

https://i.stack.imgur.com/wf8kQ.png

Answer 1

Show your Google firewall rule for this instance. Did you enable remote desktop under System Properties -> Remote ? If your internet provider is blocking your port 3389 then post the output for curl -v <WINDOWS_IP>:3389