Swarm agent doesn't initiate all machines

Hi everyone,

for as long as I can remember, I’ve always had issues with the Swarm Agent. I LOVE Unreal Engine, but Swarm Agent is the second worst software I’ve ever used, only topped by Adobe’s Premiere. For some reason, Epic are extremely adamant about making any changes or updates to their almost never working and long outdated light baking tool.
Can someone please explain to me what’s wrong with the attached picture? ALL computers are set up in an absolutely identical way, all connected to the same switch, all having the same hardware, Windows and network configuration. None of the computers are currently used by anyone, they only serve as baking machines.

Yet, only one of them helps with the execution…