you might need to provide more info like what browser are you using and/or, are you using Yahoo Mail through a 3rd party mail app like Thunderbird or something else?.
Have you checked the settings in Yahoo to see if it is a security related problem?.
That link I posted earlier opens fine for me, I just clicked on it so you must be doing something wrong and/or, you have more problems than you thought???.
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.