The error message is:

 

Unable to open the Web site
'http://localhost/CustomerFileProvider/CustomerFileProvider.csproj'. To access local IIS Web sites, you must install the following IIS components:

   IIS 6 Metabase and IIS 6 Configuration Compatibility
   ASP.Net
   Windows Authentication

In addition, you must run Visual Studio in the context of an administrator account.

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Note:

I have ASP.Net 3.5 installed, I don't have IIS installed because I just use the built in localhost provider found with Visual Studio.