Access denied even though AllowAnonymousAccess is true

Question

I have a weird problem. I'm making an application page public using

protected override bool AllowAnonymousAccess
    {
        get
        {
            return true;
        }
    }

I use the same way for other application pages and it's ok, but for this one it doesn't work as it should be. I don't understand why..

Answer 1

Make sure that your application page inherits from UnsecuredLayoutsPageBase and that anonymous access is enabled for the IIS site running the SharePoint application.

Answer 2

This will not work if publishing features are turned ON on the site since they remove LimitedAccess permission level which is required for Anon access. Try on a plain team site with all publishing features OFF.