Hi @rich, I have followed the instructions given in the practice exam document for HDPCD but still not able to access the EC2 machine from VNC software. The error is- Timed out waiting for response from computer. I am using the windows platform. Below are the options i tried. 1. Normal steps mentioned in the docs. 2. Tried disabling my laptop firewall still not able to connect 3. terminated first instance and created another instance from another windows laptop and again trying to connect from same, but still facing the same issue. 4. Choose another Singapore region to create machine still same issue, first instance was from N.Virginia ... View more