RPC and WMI Errors are Driving Me Craaaazzzyyyy!

[wmjstu]

I've been through every darn post on this forum dealing with RPC and WMI errors, and I've tried the whole schmear of resolutions.

About 3/4 of the machines on my network are failing to scan, and returning:

Wmierror The RPC server is unavailable 0x800706BA
Wmierror Cannot connect to DCOM port 135 : Firewalled?

No 3rd party firewalls, Windows firewall has port 135 open. Have even tried shutting it off.

We have Symantec Endpoint Protection, only AV installed. This has caused problems with other network applications in the past, so we have tried opening an exception, shutting off SEP, and even uninstalling it. No luck there.

Here are two flavors of typical Error Log entry:

4/29/2009 1:17:29 PM: 211AW0511 The remote procedure call failed. (Exception from HRESULT: 0x800706BE)
at System.Runtime.InteropServices.Marshal.ThrowExceptionForHRInternal(Int32 errorCode, IntPtr errorInfo)
at System.Management.ManagementObjectCollection.ManagementObjectEnumerator.MoveNext()
at LansweeperService.MdlWmi.GetWMI(String Querystr, String Table, LS_Computer& mycomputer, String section, SqlConnection& sqlcon)

5/5/2009 10:00:12 AM: RM138AL0309 Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))
at System.Runtime.InteropServices.Marshal.ThrowExceptionForHRInternal(Int32 errorCode, IntPtr errorInfo)
at System.Management.ManagementObjectSearcher.Get()
at LansweeperService.MdlWmi.GetWMI(String Querystr, String Table, LS_Computer& mycomputer, String section, SqlConnection& sqlcon)

Have tried putting in lsclient and firing off manually; that doesn't seem to help.

Can't seem to find any pattern to the ones that DO scan, and a lot of them are returning the above errors, but show all of their info anyway.

I'm very confused. Any ideas??

Thanks,

Bill Stewart

IT Support, Buist Moore Smythe McGee P.A.
wstewart@buistmoore.com
843-720-4670

[wmjstu]

Remote WMI test
-----------------------------------------------
\root\cimv2 Remote WMI access test FAILED
The RPC server is unavailable. (Exception from HRESULT: 0x800706BA)

Remote Registry test using WMI
-----------------------------------------------
\root\default Remote WMI access test FAILED
The RPC server is unavailable. (Exception from HRESULT: 0x800706BA)

Telnet returns:
"Could not open connection to the host, on Port 23: Connect Failed"

This is even though I have Telnetted to port 135

[Hemoco]

wmjstu wrote:

Telnet returns:
"Could not open connection to the host, on Port 23: Connect Failed"

You don't need to telnet op port 23, try telnetting on port 135.

On the machine try this command to get the firewall state : "netsh firewall show state"

[Hemoco]

When you try the connectiontester to these machines what is the result?
Can you manually try telnetting to port 135 on these machines?