I don't care what were going to call it- disable, lock, turn off? It's just one of numerous!! Apple "features" that I have no use for. I was just reading a long list of complaints about it in a forum, was itching to jump in. Turned out to be from 2003!! I just want it to stop filling in a 2 year old password !! *) I dumped all History, passwords etc. in both Chrome and Safari browsers *) I Disabled all Password and Auto Form fill features in both browsers *) I checked my password manager again to assure it contained the correct password,..... then ... I even disabled Auto-Fill in my password manager. And still, each time I try to log into FarceBook, an error pops up. Something about the auto-entered password being 2 yrs. old, and that I changed it back then! It ain't the browsers, and it ain't my password manager. That leaves only the wonderful skills of Keychain as the last possible culprit. I DID manage to disable/ turn off Keychain on my iPhone and iPad. But on the MacBook Pro, I can uncheck it under iCloud settings, only to see it RE-check itself back on. Thank you very much Apple, for knowing better than I what I want.