SAC resolves internal_ip to a registered Windows host and runs qwinsta/logoff synchronously over WinRM instead of queueing commands to the gateway agent.
Store domain admin in ui_settings (DB overrides env); qwinsta/logoff use effective config. Host card: POST /hosts/{id}/actions/winrm-test via pywinrm.
Detect 302→303 within 1–10s, Problem with 30s dedup, rdg_flap flag. Agent command poll API, admin qwinsta/logoff from Overview. Migration 016.