Firefox 26: How to fix Error code: ssl_error_bad_cert_domain. If you see “I understand the risks”, follow these instructions. Otherwise:

Close all tabs open with the site.

Clear your history.

In the address bar, type “about:permissions”.

Search for and click on the site.

Click “Forget About This Site”.

Error message “Cannot connect to the real <domain name>.”

In the address bar, type

chrome://net-internals/#hsts

Type the domain name in the text field below “Delete domain”.

Click the “Delete” button.

Type the domain name in the text field below “Query domain”.

Click the “Query” button.

Your response should be “Not found”.