The system was unable to unlock your login keychain, if you remember your old password you can update the keychain password. Then it will prompt to restart the computer, so after restarting the machine. It will again prompt two options ( a ) previous ( b ) next Įnter your new password in two empty fields and keep password hint as empty ( optional ). once you enter the credentials, two options will be shown ( a ) previous ( b ) next, click on next. Window appears, select your admin name it will prompt to enter Apple ID and password. Select the language as English, go to utilities on top menu bar > Utilities > Terminal execute a command resetpassword and click on enter key. Ĭlose all applications and shut down the computer, press command, R and power key simultaneously, release only power key and keep on holding command and R key until apple logo appears, the bar starts loading let it be completed. If it an admin account and you know your old password and want to change a method is there by going into recovery mode. You have not given any information which type of account are you using is it a standard account or admin account or what you can read this article Set up users, guests, and groups - Apple Support
