Ways to solve SPICE “Unable connect to graphics server” Error
This article shows you a few solutions on how to solve the SPICE "Unable connect to graphics server" error on Proxmox.
Set Proxmox Web Interface to Port 443
This how-to will explain to you step-by-step, on how to move the Proxmox VE web interface from the default port 8006 to the HTTPS port 443.