ASP.NET / Web.config: customErrors redirect only on a 404

Question

I have this scenario:

A user comes to my site and follows a link, which doesn\'t exists anymore, he should be redirected to a custom errorpage. (that works)

If a u

Answer 1

Ray Van Halens Answer is correct, but this was not the actual problem.

The reason for not showing stacktrace is a bug in mono itself. There is no other way then write an own error page where the stacktrace is dispayed.

Answer 2

In the following web.config entries, a not found (404) condition will send a user to PageNotFound.aspx

Use mode="Off" and everyone (local and remote users) will see error details.

<customErrors mode="Off">
     <error statusCode="404" redirect="~/errorPages/PageNotFound.aspx" />
</customErrors>

Use mode="RemoteOnly" and local users will see detailed error pages with a stack trace and compilation details. Remote users with be presented with the GeneralError.aspx page

<customErrors mode="RemoteOnly" defaultRedirect="~/errorPages/GeneralError.aspx">
     <error statusCode="404" redirect="~/errorPages/PageNotFound.aspx" />
</customErrors>