Visual Studio 2008 System.Runtime.InteropServices.COMException

 

Solution Summary:It seems that DevelopmentServerPort and IISUrl were changed in the process of installing Norton Internet Security. These values must be updated in the Project file.Solution Details:

1. Once the solution opens, right-click on the unavailable project and select Edit project_file_name.vbproj.                                    
2. Scroll to the bottom of the page, and delete the ProjectExtensions section.
3. Save the page.
4. Right-click again on the unavailable project, and select Reload Project.
5. Your project should now be available and you should be able to see all your project files.

When you save your project, the ProjectExtensions section will be rewritten with the updated (correct) values needed to open your project in Visual Studio 2008.