I had the same problem in my localhost. After activating Hide Backend in iThemes I was unable tu access the wp-admin page. I edited the wp_options>itsec_hide_backend option in my database from ‘enabled’ to ‘disabled’ as suggested respectyoda and I finally was able to access the wp-admin page again.
I also tried to set a Login slug in iThemes (like “wpaccess” for instance) and activated Hide Backend. Trying to access mi WP Desktop from:
https://localhost/myblog/wpaccess
nothing happened. The same problem: 404 error.
But using the following link:
https://localhost/myblog/wpaccess?loggedout=true
I was able to access the user and password login!! It’s not perfect, but it works.
