PKI Tutorials - Herong's Tutorial Examples - v2.20, by Dr. Herong Yang
Unlock Keychain to Access Certificate on macOS
This section provides a tutorial example on how to unlock locked keychain in Keychain Access. You need to lock and unlock 'login' keychain resolve 'the user name or passphrase you entered is not correct' error.
By default, there are 4 keychains in macOS. 2 of them, "login" and "Local Items" are unlocked. 2 of them, "System" and "System Roots" are locked.
Sometime you may want to unlock a locked keychain so that you can access and update certificates in the keychain easily.
1. Select the keychain you want to unlock. For example "System".
2. Click the "lock" icon on the top left corner.
3. Enter your password or (Admin password) to unlock it.
You can repeat the same process to lock an unlocked keychain.
Sometimes, you may get "the user name or passphrase you entered is not correct" error, when trying to perform a Keychain Access task. It could be a result of your login password is out of synch with the keychain password. You can lock the "login" keychain and "unlock" it again to resolve the error.
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