What WP file contains the error when attempting to access another user's admin?

Hey Guys

I am referring to the error page that states

"You attempted to access the "BLANk" dashboard, but you do not currently have privileges on this site. If you believe you should be able to access the "BLANK" dashboard, please contact your network administrator.

If you reached this screen by accident and meant to visit one of your own sites, here are some shortcuts to help you find your way.

I am looking to edit what this content says and can't seem to locate what file this is contained in. Any help is appreciated. Thanks :slight_smile: