Oh sorry, thanks.
It SEEMS only the webadmin is not working. I have SSH, desktop. DHCP and AD seem to be working fine.
I have looked in the log error log and the only lines I see are
2014/11/28 08:14:53 [error] 1197#0: *6 connect() to unix:///run/zentyal-webadmin/webadmin.sock failed (111: Connection refused) while connecting to upstream, client: 10.0.2.20, server: , request: "GET /Dashboard/WidgetJSON?module=sysinfo&widget=links HTTP/1.1", upstream: "uwsgi://unix:///run/zentyal-webadmin/webadmin.sock:", host: "10.0.0.199:8443", referrer: "https://10.0.0.199:8443/Dashboard/Index"