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This article provides steps for enabling detailed error information.


Under certain circumstances you will get the following Spider error:

Error in application

There is an unspecified error. Please contact your administrator.

In this case it is quite difficult to find the reason for the problem.

To overcome this problem we can tell IIS to not to use custom errors but show detailed information.


For this follow these steps:

  1. edit the file httpErrors.config (.\Web\_Settings) and change the errorMode from "Custom" to "Detailed"
    1<httpErrors errorMode="Custom" defaultResponseMode="Redirect" existingResponse="Auto">
  2. edit the file customErrors.config (.\Web\_Settings) and change the mode from "On" to "Off"
    1<customErrors mode="On" defaultRedirect="~/Info/Error.aspx">
  3. reset the IIS (using IISRESET)

Additional Information

This happens due to activated custom errors (default)



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Last update:
‎Oct 24, 2018 08:43 PM
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