If a multithreaded process hosts in-process Visual Basic ActiveX components (.dll or .ocx files), the multithreaded process may experience a deadlock or may stop responding (hang).

Examples of multithreaded processes include:

•	Microsoft COM+ (Dllhost.exe)
•	Microsoft Internet Information Server (Inetinfo.exe)
•	Microsoft Transaction Server (Mtx.exe)

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There are many causes for a deadlock in a multithreaded process. One possible cause is the use of Visual Basic 6.0 ActiveX components with Declare statements for application programming interfaces (APIs).

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To work around this problem, remove the Declare statements in the ActiveX .dll or .ocx projects, and use a type library to declare those APIs instead. For additional information about how to create and use a type library, click the following article number to view the article in the Microsoft Knowledge Base:

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Microsoft has confirmed that this is a bug in the Microsoft products that are listed in the "Applies to" section.

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