Hello When I login with wrong credentials in some websites, something (in fact a cookie) record my wrong credential and I always end-up to the "Invalid usename or password" page with no option to re-login. A workaround is to open a private browsing window and login on this window. If I remove the credentials recorded by Firefox on the menu Options>Privacy>Recorded credentials, it doesn't work, normal because credentials are not recorded by Firefox credential recording system but by a cookie, but not obvious to figure out. To make it work, I have to go to Options>Privacy>Remove specific cookies, put the end of the url of the problematic website and remove the matching cookies. I lost lot of time to figure out this so I want to post my problem and his solution on Mozilla forum so that when searching for solution on a search engine it end up on this post. Thanks