SCVMM 2012 SP1 Host Not Responding WMI Unknown error 0xc0000bbb

Hi,

We're absolutely stumped over getting this message on some of our HP BL460c G6 hosts that we have rebuilt to Windows Server 2012 (a fully supported option).

We can add the host to SCVMM 2012 SP1 perfectly and all works well for a time and then the host goes into a "Host Not Responding" state in SCVMM.

Error (2912)An internal error has occurred trying to contact the hvbb3.jmu.ac.uk server: : .
WinRM: URL: [http://hvbb3.jmu.ac.uk:5985], Verb: [ENUMERATE], Resource: 
[http://schemas.microsoft.com/wbem/wsman/1/wmi/root/cimv2/Win32_PerfFormattedData_Tcpip_NetworkInterface], Filter: []Unknown error (0xc0000bbb)
Recommended ActionCheck that WS-Management service is installed and running on server hvbb3.jmu.ac.uk. For more information use the command "winrm helpmsg hresult". If hvbb3.jmu.ac.uk is a host/library/update server or a PXE server role then ensure that VMM agent is installed and running. 

The event log shows the following 2 entries:

Windows Management Instrumentation has stopped WMIPRVSE.EXE because a quota reached a warning value. Quota: HandleCount  Value: 111791 Maximum value: 4096 WMIPRVSE PID: 1044 Providers hosted in this process: C:\Windows\System32\wbem\WmiPerfClass.dll, %systemroot%\system32\wbem\wmiprov.dll, %systemroot%\system32\wbem\wmiprov.dll, %systemroot%\system32\wbem\wmiprov.dll, %systemroot%\system32\wbem\ntevt.dll, %systemroot%\system32\wbem\wmiprov.dll

followed by:

Fault bucket , type 0
Event Name: APPCRASH
Response: Not available
Cab Id: 0

Problem signature:
P1: vmmAgent.exe
P2: 3.1.6020.0
P3: 512f2c20
P4: vmmAgent.exe
P5: 3.1.6020.0
P6: 512f2c20
P7: c0000005
P8: 000000000033d50a
P9:
P10:

Attached files:

These files may be available here:
C:\ProgramData\Microsoft\Windows\WER\ReportQueue\AppCrash_vmmAgent.exe_55703a5dec99a965836cdab4419ce6aa4dd15_19152e99

Analysis symbol:
Rechecking for solution: 0
Report Id: 6c27aa58-b855-11e2-93f1-68b599b83954
Report Status: 4
Hashed bucket: 

I have followed every step in the article at:

http://support.microsoft.com/kb/2742246

I have also manually rebuilt the WMI repository and also the Performance Counters with no luck at all. It may work for 2-3 hours and then falls back into the problem.

This is all despite it being a completely clean build of windows and is happening on more than one of our HP G6 servers.

Can anyone help please?

Thanks,

Tim