Tags: docker, proxmox, homelab, windows

I sat down to start a new project and Docker Desktop wouldn't run. I knew why immediately, because I'd already paid this bill once — in the opposite direction.

When I first set up Proxmox nested in VMware, VMware wouldn't run either. I fixed it by turning the Windows hypervisor off so the nested VM could reach VT-x/EPT directly. It worked. What I didn't think about at the time was the other half: Docker Desktop needs that same hypervisor. So I had a working homelab and no development environment, and I'd done it to myself months earlier without noticing.

The two are mutually exclusive on one machine:

Hypervisor on: Docker Desktop works, nested Proxmox fails.