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Visual Basic for Applications Reference

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Too many DLL application clients (Error 47)

Specifics

The dynamic-link library (DLL) for Visual Basic can only accommodate access by 50 host applications at a time. This error has the following cause and solution:

  • Your application and other applications that are Visual Basic hosts (some of which may be accessed by your application) are all attempting to access the Visual Basic DLL at the same time.

    Reduce the number of open applications accessing Visual Basic.

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