Re: I have Firfox 18.0.1. On one website my usercode and password entries are considered not valid. The same usercode and password work fine in IE and Google.
I had removed the cookie and I clear the cache on exit. I went back and deleted the cookie for that website again. My cache had 0 files. I found the saved password. Nothing worked.
I can't find the "cookies.sqlite" file. I went to the "Start" button and put that file in the search box but get the no files response. I have noticed that several times, not very often, a website will say my cookies is not activated even though it is.
Further information: have the Comcast version of Norton Security Suite. Recently, I got a red box on the Security portion. I deleted the Suite and re-installed it. I haven't been able to get the Norton Toolbar even though I have run the live update several times. I also deleted and re-installed Firefox but kept my personal files. The problem with the usercode/password started after the Norton problem. All other secured websites I use work when entering the usercode and password.