When some ASP.NET applications written under DOWN, when the VS2003 is opened, and if the virtual directory has been set, IIS is properly launched, but it receives "Visual Studio.net cannot create or open the application. The problem is probably because there is no required component on the local Web server. Run the Visual Studio.net installer and add a web development component. "This is a wonderful error.
If there is a project file (.sln) in the program, the following: Open the .sln file, look inside
Project ("{F184B08F-C81C-45F6-A57F-5ABD9991F28F}") = "test", "http:///localhost/test/test.vbproj", "{2739dcb6-a7c3-41fa-a067-8c7425892add}"
This sentence, seeing a local URL, this is the name of the author used when creating this ASP.NET application, called Test, so change the name of the virtual directory to Test and point to the path, then in VS2003 It's normal to open it.