I have a visual studio solution and when I opened it I got an error saying:
“http://localhost:55365 : error : Unable to open the Web site
‘http://localhost/_1‘. To access local IIS Web sites, you must install
the following IIS components:In addition, you must run Visual Studio in the context of an
administrator account.For more information, press F1.”
What is strange is that nothing is listed to install. NOTE : I have run visual studio as administrator. This is a screenshot of the solution in the explorer…

Really I have 2 questions:
1) What is the project type of the second project in the solution explorer?
2) Why wont it load? I do have IIS installed and I have other sites that run under the web development server….
About 2), maybe you erased by error your web site code and its physical folder, or the IIS web site.