Summary

When WebLink is installed on a computer with Windows Server 2003 x64, you may receive the following error message when loading WebLink:

Retrieving the COM class factory for component with CLSID {E8A9877C-064A-4C13-BC81-7F578A80C821} failed due to the following error: 80040154.

Resolution

Manually change the ASP.NET mappings for your WebLink 7 virtual directory to use .NET 1.1.

To modify the mappings for WebLink 7

1. Load the Internet Information Servers (IIS) Manager.
2. Expand Web Sites.
3. Expand Default Web Site and select the WebLink7 virtual directory.
4. From the Action menu, click Properties
5. On the Virtual Directory tab, click Configuration
6. On the Mappings tab, for each extension that is mapped to .NET 2.0, modify the entry to use .NET 1.1. The executable path should look like the following:

   C:\WINDOWS\Microsoft.NET\Framework\v1.1.4322\aspnet_isapi.dll

7. Click OK to close the dialog box and save your changes.
8. Restart IIS.