Quit Keychain Access and restart your Mac. Again, your original keychain will simply be set aside when you reset your default keychain in this manner.

Once you deleted a password via Settings -> Passwords, it was gone from your iCloud Keychain for good. In iOS 17, that's changed, and now you have a limited window of opportunity to recover an ...

When the reader disabled iCloud Keychain on all their devices and re-enabled it, they weren’t prompted for the password on an old Mac again—or any passcode at all.