Since some days ago I can't run the Server Manager, it fails like this:

Descripción:
 Stopped working
Firma con problemas:
 Nombre del evento de problema: CLR20r3
 Firma del problema 01: mmc.exe
 Firma del problema 02: 6.1.7600.16385
 Firma del problema 03: 4a5bc808
 Firma del problema 04: System.Management
 Firma del problema 05: 2.0.0.0
 Firma del problema 06: 4ca2baf0
 Firma del problema 07: 32f
 Firma del problema 08: 12b
 Firma del problema 09: System.IO.FileNotFoundException
 Versión del sistema operativo: 6.1.7601.2.1.0.272.7

There are other strange syntoms in the SO:

• Hyper-V stopped working as well, fails to load any VM information

• The desktop icons rearrange themselves all the time, and always on boot, after I move them. I use now an app that remembers their position to restore it...

• Windows Update service dissapeared, along with BITS service, I managed to recover them and installed all updates availables today

I'm going nuts looking for information about these errors.

Solutions that didn't work:

• sfc /scannow Doesn't complain about anything

• All windows updates applied (after recovering missing Windows Update)

• ServerManager.log:

  Only one error all the time:

  Error (Id=0) System.Runtime.InteropServices.COMException (0x800706D9): No hay más extremos disponibles desde el asignador de extremos. (Excepción de HRESULT: 0x800706D9) en Microsoft.Windows.ServerManager.NativeMethods.INetFwPolicy2.IsRuleGroupCurrentlyEnabled(String group) en Microsoft.Windows.ServerManager.DirectResult.GetRemoteManagementEnabled()

  In english : "There are no more endpoints available from the endpoint mapper"

Where could I see which is the infamous file that mmc.exe is looking for in that System.IO.FileNotFoundException??

Please, any light on this would be much appreciated...