Unreal Engine freezes on build lighting

OK so I tried this and here’s the output:

C:\WINDOWS\system32>netstat -nao | find “8008”
TCP 127.0.0.1:8008 127.0.0.1:55626 ESTABLISHED 21980
TCP 127.0.0.1:55626 127.0.0.1:8008 ESTABLISHED 21980

Then I enabled the PID column in task manager and sorted it by it. The only process using that PID is the swarm agent.