P2 has an iMac running Big Sur (I believe; I didn’t check that). Whatever it is, Firefox 115.31.Oesr says it is up to date.
When she visits Internet Archive (archive.org) and tries to login, the login page has her credentials already populated. (She says it has been that way for a long time.) When she clicks the Login button (or whatever it is called) or presses Return from that page, nothing happens. She can login using Safari and I can login using Firefox 145.0 and her credentials (but I need to click in the username field and select the account; I mention it because it’s different).
When she clicks the Login button from the Internet Archive home page, the Login page “hiccups” (it appears to load twice or even three times). She said that is new and it does not do that on my version of Firefox.
I deleted the site (including her credentials, of course) from Firefox’s saved passwords, then tried to login by manually entering the credentials. Same result as before, no apparent reaction from the web site at all. I then reentered her credentials (and the web site, of course) in Firefox’s saved passwords (because that’s the way it was when I arrived). Just before leaving, I tried one more time. It worked! I logged out and tried logging in again, and it failed as before.
I don’t know what is behind her login issue, but unless she cannot upgrade her Mac beyond macOS 10.14, I do recommend updating to either Firefox 146 or Firefox 140.6esr.
That said, I would check to see if she has any extensions installed that might interfere with logins, such as ad blockers. If she does, try disabling them temporarily to see if that addresses the login trouble.
Thanks. Her only extensions are HTTPS Everywhere and Privacy Badger. She turned them off, quit and restarted Firefox, and had the same problem at Internet Archive.
“About Firefox” does not offer anything beyond what she has. I was wrong about macOS; she is running 10.14.6 Mojave. The newest version she can run is 10.11 Big Sur.
She has been reluctant to update macOS ever since her employer updated her work computer (I think to Big Sur, but I don’t recall for sure) and some of her Mail folders showed no (IMAP) messages. She could see the messages on her home computer and didn’t want to jeopardize that.
I can’t answer specifically because I don’t use that site, but any stored credentials and user ID are usually stored in the cookie for the web site. The password storage in Firefox will just autofill the user and password fields, so deleting them will not delete the stored cookie.
So if you want the site to not remember her stored user name, I’d look in settings, manage cookies and site data, and delete anything stored for archive.org and then go back into the site and see what happens.
I should have kept better notes. She has Firefox configured to delete all cookies, browsing history, cache, and anything else that Firefox offered to clear, every time she quits Firefox. At least three times, she did quit Firefox. Maybe one of those times was after deleting the credentials, and that’s why it worked one time.
Thanks for pointing out that cookies could hold login information. I knew that, but hadn’t connected the dots.