Force Update of New Password on MAC Keychain

After you have changed your domain password:

• Upon bootup, log in to Mac with your old password. (Should log in directly to your user profile).
• Connect to VPN via GlobalProtect.
• Open Terminal (at top-right, search for and launch Terminal).
• Type “login identifier” 
  • Example:  login abc123
  • If you don't know your identifier, it will be in the terminal before $
• Type your new password.
• Log off the computer.
• Log in to the computer with the new password.
• At the pop-up, “The system was unable to unlock your login keychain:”
  • Select Update Keychain Password.
  • Enter your old password.
  • Shutdown computer, do not restart.
• Turn on the computer.
• Upon bootup, enter old password. (This time, it will NOT go directly your user profile).
• Enter the new password on the login screen.
• Restart the computer.
• Login to FileVault Screen with your new password. (Should go directly to your profile).