Microsoft KB Archive/312280

= BUG: Cannot Debug COM+ Application in Visual Basic IDE Under Windows XP =

Article ID: 312280

Article Last Modified on 10/22/2002

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APPLIES TO


 * Microsoft COM+ 1.5, when used with:
 * Microsoft Windows XP Professional

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This article was previously published under Q312280



SYMPTOMS
If you develop a Microsoft Visual Basic COM+ application and set the MTS Transaction Mode of the component to a value other than zero (0) in the Integrated Development Environment (IDE), you may receive the following error message:

Runtime error '430':

Class doesn't support Automation or does not support expected interface.

This problem only occurs in Windows XP if the component that you are debugging is not installed in a COM+ application.



RESOLUTION
To work around this problem, install the component in a COM+ application.

NOTE: This is fixed in XP hotfix described in Q317926. See the &quot;References&quot; section of this article.



STATUS
Microsoft has confirmed that this is a bug in the Microsoft products that are listed at the beginning of this article.

