The URL 'http://localhost/xxx' for Web project 'xxx' is configured to use IIS Express as the web server but the URL is currently configured on the local IIS web server. To open this project, you must use IIS Manager to remove the bindings using this URL from the local IIS web server

When you face the following error while loading your web project, please set the value of "UseIISExpress" to "false" in both file ".csproj" and ".csproj.user". After doing this setting reload your project and it will get loaded successfully.

ERROR : The URL 'http://localhost/xxx' for Web project 'xxx' is configured to use IIS Express as the web server but the URL is currently configured on the local IIS web server. To open this project, you must use IIS Manager to remove the bindings using this URL from the local IIS web server.