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Trying To Query Remote Machine Using WMI & ASP.NET Fails With "Invalid Class"

I am trying to read a list of install programs using WMI with ASP.NET/C#.
However, it fails with "Invalid Class".

I have confirmed that if I query LOCALHOST then it works fine, but if I
query a remote machine then it fails. If I enter incorrect credentials,
then it fails with an access denied, so I know that I am at least connecting
to the WMI provider.

Here is the error:

Invalid class
Description: An unhandled exception occurred during the execution of the
current web request. Please review the stack trace for more information
about the error and where it originated in the code.

Exception Details: System.Manageme nt.ManagementEx ception: Invalid class

Source Error:
Line 503: foreach(Managem entObject oReturn in oReturnCollecti on )

Source File: c:\program files\asp.net starter kits\asp.net portal
(csvs)\portalcs vs\desktopmodul es\testconfigur ations.ascx.cs Line: 503
Here is what my code looks like:

ConnectionOptio ns oConn = new ConnectionOptio ns();
oConn.Username = AdminUserName;
oConn.Password = AdminPass;
System.Manageme nt.ManagementSc ope oMs = new
System.Manageme nt.ManagementSc ope("\\\\" + Servername + "\\root\\cimv2" ,
oConn);
System.Manageme nt.ObjectQuery oQuery = new
System.Manageme nt.ObjectQuery( "Select * FROM Win32Reg_AddRem ovePrograms");
ManagementObjec tSearcher oSearcher = new
ManagementObjec tSearcher(oMs,o Query);
ManagementObjec tCollection oReturnCollecti on = oSearcher.Get() ;

foreach(Managem entObject oReturn in oReturnCollecti on )
{
// Do something, but I don't even get into the foreach, it dies trying
to access the first object
}

Nov 18 '05 #1
0 2153

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