Hi, delete all references to the website in question, as shown under the heading 'How do I remove a single website from my history?' in this article - [[Delete browsing, search and download history on Firefox]], then try the site again. If that doesn't help, please give us as much info as possible, such as the exact URL and any error message. ''If your question is resolved by this or another answer, please take a minute to let us know. Thank you.''