This article was previously published under Q248019
Note Microsoft Visual C++ .NET (2002) supports both the managed code model that is provided by the Microsoft .NET Framework and the unmanaged native Microsoft Windows code model. The information in this article applies only to unmanaged Visual C++ code.
If you call a method on a COM server from an MFC COM client application and if the method takes a long time to process and return back, you won't be able to do anything on the client application and the OLE Server Busy dialog box pops up. This article explains how you can increase the time-out period of the COM call and also shows you how to avoid this dialog box.
Ensure that the MFC client application is calling AfxOleInit() to initialize COM. This is important, because AfxOleInit() also initializes and registers a COleMessageFilter data member in the CWinApp. Alternatively, you can create your own COleMessageFilter object and register that during the startup.