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

iis iis-7 asp-classic iis-7.5 windows-server-2008-r2
smartcaveman picture smartcaveman · Jun 12, 2011 · Viewed 19.2k times · Source

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: 500 - Internal server error. There is a problem with the resource your are looking for, and it cannot be displayed.

Answer

Kev picture Kev · Jun 13, 2011

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:

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