I am testing authentication with client certificates (self-made CA and certs/keys). Everything works correctly. However, if I do not choose the right certificate in the first try, or add client certificates after trying the secure website (and not getting access), I am not re-prompted with choosing client certificates, I get access denied. The only solution I have found so far is `refresh` firefox. Then I have to add my own certs again, which is somewhat tedious, but then I am asked again for client certs and it works. Is there a way to make Firefox "forget" that it got denied the previous time? Or force rep-prompting?