title: Server Error in '/asp.netwebadminfiles' Application - VS 2013
body: <p>I'm working with ASP.Net web application and i want to create a membership user so i have to access the Web Configuration Tool for ASP.NET . i have run  IISExpress commands in Prompt and it's works fine but whenever i run the <code>http://localhost:5376/asp.netwebadminfiles/default.aspx?applicationPhysicalPath=C:\Users\user\Documents\Visual%20Studio%202013\Projects\MyWebsite&amp;applicationUrl=/</code> in the browser i got this error !</p>
  <p>the error message :</p>
  <blockquote>
  <p>Server Error in '/asp.netwebadminfiles' Application.</p>
  <p>Compilation Error</p>
  <p>Description: An error occurred during the compilation of a resource
  required to service this request. Please review the following specific
  error details and modify your source code appropriately.</p>
  <p>Compiler Error Message: CS0122: 'System.Configuration.StringUtil' is
  inaccessible due to its protection level</p>
  <p>Source Error:</p>
  <p>Line 987:</p>
  <p>Line 988:             // Put together some unique app id</p>
  <p>Line 989:             string appId =StringUtil.GetNonRandomizedHashCode(String.Concat(appPath,appPhysPath)).ToString(&quot;x&quot;, CultureInfo.InvariantCulture);</p>
  <p>Line 990:</p>
  <p>Line 991:</p>
  <p>Source File:
  c:\Windows\Microsoft.NET\Framework\v4.0.30319\ASP.NETWebAdminFiles\App_Code\WebAdminPage.cs
  Line: 989</p>
  </blockquote>