How can I show detailed ASP errors?

By default, Windows Server hides application errors from your website. You can override this by adding the following inside a ‘web.config’ file that will cause IIS to output any errors to your browser:

<configuration>
    <system.webServer>
        <httpErrors errorMode=“Detailed” />
    </system.webServer>
    <system.web>
        <customErrors mode=“Off” />
        <compilation debug=“true” />
    </system.web>
</configuration>