This section contains issues related to the VNC and SPICE consoles in Proxmox.
In order to have a seamless mouse point between the VM and host machine, SPICE guest tools must be installed inside the VM. The guest tools package contains full driver support for Windows 7 and Windows 2008 R2. However, the support for Windows 8 or 8.1 is close to nonexistent.
This issue is caused by a firewall that blocks the SPICE port, which prevents SPICE-enabled virtual machines from being connected to SPICE. Open port 3128
from Windows firewall to allow remote viewer to connect to a SPICE virtual machine.