How do I copy/paste to a VM console window in the VMware ESXi HTML interface?

Solution 1:

The HTML console is not meant for getting any real work done, it is more suited for checking if a VM has stalled, or is stuck in some reboot loop.

For functionality like copy and paste to work, you need to use either the VMware Remote Console (VMRC) or VMware Workstation Pro, which includes VMRC functionality.