Custom AccessDenied Using Web.config

Question

For some reasons i find my self facing this request : Making a redirect from : /_Layouts/AccessDenied.aspx to a Custom ApplicationPage and the modification MUST be done ONLY on web.config which means that i can't use

UpdateMappedPage(SPWebApplication.SPCustomPage.AccessDenied, customAccessDeniedPage)

or any of the solutions on this site

After some research i tried to add this :

<customErrors mode="On" defaultRedirect="~/_layouts/AccessDenied.aspx">
<error redirect="~/_layouts/MySite/Pages/AccessDenied.aspx" statusCode="401" />
<error redirect="~/_layouts/MySite/Pages/AccessDenied.aspx" statusCode="403" />
</customErrors>

And this :

<system.webServer>
<httpErrors errorMode="Custom" existingResponse="Auto">
</httpErrors>

but it didn't make a redirect, even if, under the IIS --> MySite the redirect exist !

Answer 1

I don't think it can be done. I'm pretty sure the sharepoint httpmodule is what redirects for errors and accessdenied pages. So it ignores what's in the web.config.