Re: WMI connection problem

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From: mklomp (mklomp_at_sylis.nl)
Date: 06/11/04 

Date: 11 Jun 2004 04:15:32 -0700

i have checked the registry settings and DCOM was enabled. enabling it
a second time didn't fix the problem.

i have now 4 clients to test with.

i use rpcping to test the connection(from client 10.31.3.165 to client
10.31.3.248 and 10.31.3.243). here are the results.

D:\rk2003>D:\rk2003\rpcping.exe -s 10.31.3.248 -t ncacn_np
Completed 1 calls in 10 ms
100 T/S or 10.000 ms/T

D:\rk2003>D:\rk2003\rpcping.exe -s 10.31.3.248 -t ncacn_http
Exception 1722 (0x000006BA)

D:\rk2003>D:\rk2003\rpcping.exe -s 10.31.3.248 -t ncacn_ip_tcp
Exception 1722 (0x000006BA)
Number of records is: 3
ProcessID is 2968
System Time is: 6/11/2004 8:49:10:746
Generating component is 8
Status is 1722
Detection location is 313
Flags is 0
NumberOfParameters is 0
ProcessID is 2968
System Time is: 6/11/2004 8:49:10:746
Generating component is 8
Status is 10061
Detection location is 311
Flags is 0
NumberOfParameters is 3
Long val: 135
Pointer val: 0
Pointer val: 0
ProcessID is 2968
System Time is: 6/11/2004 8:49:10:746
Generating component is 8
Status is 10061
Detection location is 318
Flags is 0
NumberOfParameters is 0

D:\rk2003>D:\rk2003\rpcping.exe -s 10.31.3.243 -t ncacn_ip_tcp
Completed 1 calls in 60 ms
16 T/S or 60.000 ms/T

i have checked for ip-packet filtering, but we don't use that on our
internal network. i have now a tested with 4 clients from the
production network. 2 clients have the problem and 2 haven't.

if i use the script i give in my first post. i get the following result

10.31.3.248 and 10.31.3.165 are the clients with a problem. 10.31.3.243
and 10.31.3.249 haven't any problem.

10.31.3.165 --> 10.31.3.243 error: 0
10.31.3.165 --> 10.31.3.248 error: 462
10.31.3.165 --> 10.31.3.249 error: 0
10.31.3.248 --> 10.31.3.165 error: 462
10.31.3.248 --> 10.31.3.243 error: 0
10.31.3.248 --> 10.31.3.249 error: 0
10.31.3.243 --> 10.31.3.249 error: 0
10.31.3.243 --> 10.31.3.248 error: 462
10.31.3.243 --> 10.31.3.165 error: 462

the problem occurs only by incoming connections on the problem clients.
outgoing connections on this clients has no problems.

i have checked the 4 client for firewall software and for the ICF
settings. and there is no firewall software installed and the ICF is
not enabled. the clients are connected to the same switch. this switch
don't use packetfiltering

thanks,

Michel Klomp

Ivan Brugiolo [MSFT] wrote:
> You can run this against the suspect machines (reboot required)
>
> c:\>reg add "\\Machine\hklm\Software\Microsoft\OLE" /v EnableDCOM /t
REG_SZ
> /d "Y" /f
>
> Last time these symptoms were reported on the newsgroup,
> the problem was an IP port block on the target machine.
> The description is exactly the one of RPC-over-TCP being blocked or
> disabled.
>
> --
> This posting is provided "AS IS" with no warranties, and confers no
rights.
> Use of any included script samples are subject to the terms specified
at
> http://www.microsoft.com/info/cpyright.htm
>
>
> "mklomp" <mklomp@sylis.nl> wrote in message
> news:caam91$ae7@odah37.prod.google.com...
> > i'm completely sure there are no ip-filters or firewalls inside the
> > network, certainly not between the 2 pc's i testing with.
> >
> > we have running a anti-virus client on the clients(mcafee), but we
use
> > the same configuration on all the clients, including the group
where
> > wmi works remotely.
> >
> > how can i disable/enable Dcom on a client? i have compare the
registry
> > setting from client that works with the client that don't work and
they
> > are the same.
> >
> > and how can i fix a generalized RPC-over-TCP blindness?
> >
> > tomorrow, i shall look to the mcafee settings. but i'm pretty sure
that
> > all clients use the same configuration.
> >
> > thanks,
> >
> > Michel Klomp
> >
> > Ivan Brugiolo [MSFT] wrote:
> > > Are you completely sure you don't have any Anti-Virus, IP-Filter
or
> > Firewall
> > > ?
> > > The description of the problem point the finger to either DCOM
being
> > > disabled for that machine
> > > or a generalized RPC-over-TCP blind-ness.
> > > You can use remote registry because it uses RPC-over-NamedPipes.
> > >
> > > --
> > > This posting is provided "AS IS" with no warranties, and confers
no
> > rights.
> > > Use of any included script samples are subject to the terms
specified
> > at
> > > http://www.microsoft.com/info/cpyright.htm
> > >
> > >
> > > "mklomp" <mklomp@sylis.nl> wrote in message
> > > news:ca9olg$mgf@odah37.prod.google.com...
> > > > Hello,
> > > >
> > > > i have a wmi connection problem, when i run a vbscript that
scan
> > 100
> > > > clients with wmi, 60 clients respont correctly. the other
clients
> > have
> > > > a connection problem.
> > > >
> > > > if i run the following script, i get error number 462, if i run
> > this
> > > > script to one of the 60 correct clients i get error number 0
> > > >
> > > > On Error Resume Next
> > > > CheckIP("10.31.3.248")
> > > > WScript.Echo "ErrorCode : " & Err.number
> > > > Err.clear
> > > >
> > > > Sub CheckIP(ComputerName)
> > > > Set objWMIService = GetObject("winmgmts:\\" & ComputerName &
> > > > "\root\cimv2")
> > > > Set objWMIService = Nothing
> > > > End Sub
> > > >
> > > > if i try to connect to this client with wbemtest.exe, i get the
> > > > following error.
> > > >
> > > > Number: 0x800706ba
> > > > Facility: Win32
> > > > Description: The RPC server is unavailable.
> > > >
> > > > it make no difference when i use the host name inplace of the
ip
> > > > adress. in one of the microsoft newsgroups i found the next
> > > > testprogram, DCOMtest.exe. with this program i have the same
> > problem. i
> > > > can't connect with this client. i get the following error.
> > > >
> > > > D:\rk2003>C:\temp\TstClnt.exe 10.31.3.248
> > > > Client: Creating Instance...0.9419 seconds
> > > > Client: CoCreateInstanceEx: The RPC server is unavailable.
> > > > (800706ba)
> > > > Client: Done
> > > >
> > > > i do this with a account that has Domain admin rights. i
compare
> > the
> > > > wmi rights from this client with a correct client and they are
the
> > > > same, i also compare the registry settings for rpc
> > > > (HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/Rpc/DCOM_Protocols) and
they
> > are
> > > > the same. there are no firewalls of other filter applications
> > between
> > > > the clients. i can connect remotely to the registry and the
admin
> > > > share.
> > > > i can also connect with computermanagement to the client, but
when
> > i
> > > > try to connect to wmi i get the following error.
> > > >
> > > > Failed to connect to \\10.31.3.248
> > > > because "Win32: The RPC server is unavailable."
> > > >
> > > > i has set verbose logging for wmi, and i get the following
error im
> > my
> > > > event log.
> > > >
> > > > Event Type: Error
> > > > Event Source: DCOM
> > > > Event Category: None
> > > > Event ID: 10009
> > > > Date: 10-6-2004
> > > > Time: 9:33:49
> > > > User: EXELBXAD\support10
> > > > Computer: NLLC3935302622
> > > > Description:
> > > > DCOM was unable to communicate with the computer 10.31.3.248
using
> > any
> > > > of the configured protocols.
> > > > For more information, see Help and Support Center at
> > > > http://go.microsoft.com/fwlink/events.asp.
> > > >
> > > > all clients run Windows XP Pro with Service Pack 1.
> > > >
> > > > So does anyone have a idea how i can solve this problem,
reinstall
> > 40
> > > > clients is not a option.
> > > >
> >

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