Problem Description A WCF message inspectors pass a custom message header from the client caller to the WCF service hosted in a Windows service over TCP. A ClientMessageInspector adds in the custom header.  A DispatchMessageInspector looks for the...

Problem Description The component is a COM+ event class. It is also a COM+ QueuedComponent (QC) and has object pooling enabled. The clients are a COM+ event publisher. They call into the event component to fire an event. Subscribers are notified of the...

Problem Description A .NET WinForms application creates a distributed transaction that inserts a row into a remote Informix OLE DB database. The .NET app uses System.Transactions and the IBM Informix OLE DB Provider. The transaction starts timing out...

Problem Description Intermittently a COM+ application that called the DOMDocumentWrapper::load method in msxml3 is hung. A restart of the application was required to temporarily solve the problem on a Windows 2000 SP4 machine. Cause To identify the cause...

Problem Description An application calls CreateObject to activate a COM+ component or a DCOM server component which runs on a remote machine. The call to the CreateObject may fail with the error 80070721 which translates to "A security package specific...

Problem Description We saw slow Web response and high CPU in a 3-tier application under load. The application consisted of an IIS Web application front end, COM+ applications on the app server and the DB application on the backend. Cause To identify the...