1. Open Internet Information Services (IIS) 
  2. Open the properties of the web site used for Blackbaud NetCommunity and select the Home Directory tab.
  3. Click Configuration... to display the Application's configuration.
  4. Verify the following extension exists. If not then add it with Verbs listed next to it. Link to the following executable if adding the extension: C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\aspnet_isapi.dll.redir - ALL
  5. Restart the IIS Admin Service (BB41378)