I have installed W2k3 R2 VM, since it had at start no network detected i added a legacy network adapter and installed intergration services. Now by recommendations on the comments of ths question I change the legacy network adapter to a tradicional virtual network adapter.
The server is used as DNS and a Domain Controller. Users are working as intended with no problems.
Still i get the "Heartbeat: No contact" message but the icon shows the activity of the server.
What did i do wrong ?
As i noticed, i cannot install intergration services as it retruns an OS icompatibility error and update via Windows Update is not possible returning a '0x80072EFE windows update error'