IIS 7 Invalid Application Path Error

While trying to add an application to IIS7 , I couldn’t get pass the “Test Settings” step. I kept getting this error “Invalid application path”
IIS7-Invalid Application Path Error

IIS7-Invalid Application Path Error

It seems that using the default “Pass Through” authentication is not allowing the connection and hence the error: “Invalid Application Path”

Here are the steps I took to fix it.

After adding an application, and before i “Test Settings…”

IIS7 - connect as

IIS7 - connect as

  • Click on “Connect as…”
  • Select “Specific user:” instead of the default selection “Application user: (“Pass Through” authentication)” This will open another window to “Set Credentials” for that user.
  • Enter the credentials of the administrator account.
  • Click Ok.
  • Click “Test Settings…”  to test the connection again.
  • All is green, and the path is indicated as being “accessible” and you will get the following message: “The specified user credentials are valid.”
iis7-connection-validIIS7 – Connect valid 



I work as a Technical Evangelist for Microsoft Azure and Windows Apps with Microsoft. In my spare time, I write technical books. I am the author of the book “Developing Windows Store Apps with HTML5 and JavaScript” - http://www.packtpub.com/developing-windows-store-apps-with-html5-and-JavaScript/book. I have a little over 8 years of experience in programming for the web. I was awarded Microsoft Valued Professional in 2013 and 2012 for my contributions in the technical communities of Visual C# and ASP.NET/IIS respectively. During that time I was featured a regular speaker at Microsoft Lebanon's main events including Open Door and Tech Days, delivering hands-on workshops on Windows 8, HTML5, Azure, and Visual Studio. When not working, I do enjoy running and playing music. And when on vacations, I enjoy traveling and visiting new places around the world.

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