Article ID: 228487
Article Last Modified on 5/13/2003
APPLIES TO
- Microsoft Visual Basic 5.0 Learning Edition
- Microsoft Visual Basic 6.0 Learning Edition
- Microsoft Visual Basic 5.0 Professional Edition
- Microsoft Visual Basic 6.0 Professional Edition
- Microsoft Visual Basic 5.0 Enterprise Edition
- Microsoft Visual Basic 6.0 Enterprise Edition
This article was previously published under Q228487
SYMPTOMS
When you try to run an ActiveX DLL from the Visual Basic IDE, you receive the following error message:
CAUSE
When Visual Basic runs an ActiveX DLL from the IDE, it calls the CoRegisterClassObject application programming interface (API) to temporarily register the server. This creates the AppId and specifies it to run in the Interactive User context.
This problem occurs because of a bug in the Microsoft OLE Libraries 4.0, which are included with the Microsoft Platform Software Development Kit (SDK). CoRegisterClassObject fails with the error message that is listed in the "Symptoms" section of this article under the following conditions:
- If the ActiveX server that calls the API is set to run by using the Interactive User identity. -and-
- The string that is associated with the following registry key contains any value other than a single valid executable name for the shell process:
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Winlogon Shell=
Under Microsoft Windows 2000, this error occurs when the Certification Authority service does not start.
RESOLUTION
Make sure that the HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Winlogon Shell= registry key contains a single valid executable name for the shell process.
To resolve this problem under Windows 2000, you can install the "Client for Microsoft Network" component and then reboot.
See the "References" section of this article for instructions about how to handle this error when it is related to the Certification Authority on systems that are running Windows 2000.
REFERENCES
For additional information, click the article number below to view the article in the Microsoft Knowledge Base:
170364 CoRegisterClassObject Fails with CO_E_WRONG_SERVER_IDENTITY
Keywords: kbregistry kbinprocsvr kbprb KB228487
