How do you allow parent paths in Visual Studio 2015?

Question

I've opened an existing web application project from Visual Studio 2013 (which runs just fine), in Visual Studio 2015. When I run it from within Visual Studio 2015 I get:

Active Server Pages error 'ASP 0131' 

Disallowed Parent Path 

/blah/login.asp, line 1 

The Include file '../includes/Security.asp' cannot contain '..' to indicate the parent directory. 

My IISExpress applicationhost.config file already contains the entry:

<asp appAllowClientDebug="false" appAllowDebugging="false" errorsToNTLog="false" enableParentPaths="true" scriptErrorSentToBrowser="true" bufferingOn="true">

            <session allowSessionState="true" />
            <cache diskTemplateCacheDirectory="%SystemDrive%\inetpub\temp\ASP Compiled Templates" />
            <limits maxRequestEntityAllowed="1073741824" />
        </asp>

My web application properties are set to use IISExpress.

What could I be missing?

Answer 1

The 'applicationhost.config' has moved and is now located in the hidden .vs folder. Make sure you're updating the right file.

Answer 2

Here is a much clear explaination although the accepted answer is in the right direction.

Since VS2015, IIS Express has changed where it picks up your applicationHost.config file. This is presumably to simplify the distribution of projects. It has moved away from the traditional C:\Users\<profile>\Documents\IISExpress\config\applicationhost.config folder (although this file will still exist on your computer to support older VS installations).

It is now located in the application project's root folder as a hidden file. To save you hunting for it, here is how you open it quickly and easily:

1. Right click IIS Express from the tray icon and select Show All Applications.
2. Click on the URL entry of your application. The "Path" and "Config" values then are shown as hypertext links further down in the IIS Express window.
3. Click on the Config hypertext to open on your preferred editor. (e.g. C:\<Path-To-Project>\.vs\config\applicationhost.config)

Hope this helps.