[KevinH]

On my machine it apears exactly where they said it would be.

Apple sometimes tries to redirect people to its Passwords app but do not let it.

Also all MacOS supplied Applications do not live in /Applications anymore. and instead just appear to.

/Applications is where only third party applications are now stored. To protect its own apps from being modified in any way by the user they are now in /System/Applications.

So try the following in Terminal.app

cd /System/Applications/Utilities/
open "Keychain Access.app"


Then under the main Apple menubar at the top of your screen, use your mouse to click on Keychain Access, and a menu will appear that has "About Keychain Access", "Settings...", and "Certificate Assistant" should be third.


--- Update - all of that is true in Sonoma, But in Sequoia it seems to be located here:

/System/Library/CoreServices/Applications

so try the following:

cd /System/Library/CoreServices/Applications/
open "Keychain Access.app"

---

Hope this helps.

KevinH