What is required for an IIS site to send error details to the browser?

Question

I am receiving a Server Error on an ASP Classic site running on IIS 7.5.

I have "Send Errors To Browser" set to True, however I still receive the following error screen:

Matthaeus

Answer 1

IIS is hijacking your classic ASP app's response. In your web.config file ensure that the following is configured:

<configuration>
    <system.webServer>
        <httpErrors existingResponse="PassThrough"/>
    </system.webServer>
</configuration>

Also make sure that you've enabled "Send Errors To Browser" in the ASP configuration feature for your site in IIS manager:

Prisage

there is no web.config in a Classic ASP site. Should I create one and add that setting? – Matthaeus

@Matthaeus - yes. web.config in IIS7.x isn't just specific to ASP.NET. It can be used to config IIS settings as well, such as IIS's custom error handling. – Prisage

@Matthaeus - I updated the answer to show exactly what it should look like. – Prisage

those are my settings, as I posted in the question. I will create a web.config and get back to you. – Matthaeus

@MatthewLock in what way doesn't it work? Why not ask a new question, refer to this one and explain in detail what doesn't work. Also include the relevant configuration info which we know nothing about. – Prisage

Fair enough. Will do next time. – Little

Perfect solution. I already knew 'Send Erros To Browser', hence it was correctly set. As I was accessing external server, the creation of the 'web.config' AT THE APPLICATION ROOT completed the solution. – Pasadis

Answer 2

In my case my site needed to be an IIS Application, rather than just a virtual directory,

Little