Of course, that only works if you haven’t also forgotten the password for the other administrator account.
If you don’t remember that password either, try one of the other methods outlined below.
get in to a second administrator account.
LaunchSystem Preferences, and select theUsers& Groupspreference pane.
Click thelockicon in the bottom left corner of the preference pane and type your administrator password.
In the left-hand pane, select theadministrator accountwhose password needs to be reset.
Click theReset Passwordbutton in the right pane.
Resetting the password this way creates a new keychain file for the user account.
If you want to use the old keychain file, see the instructions below.
slide in your password incorrectly three times at the login screen.
hit the small right-facing button next to the…reset it using your Apple Accounttext.
key in your Apple Account and password and then click theReset Passwordbutton.
A warning message will display, telling you that resetting the password will cause anew keychain fileto be created.
Click theOKbutton to reset the password.
Enter the new password along with a password hint and clickReset Password.
You’ll be asked to restart when you are done.
Reset Your Administrator Password Using the Recovery HD Partition
Apple includes aRecovery HD partitionon newer Macs.
It contains a Reset Password option.
Restart the Mac while holding down theCommand+Rkeyboard combination to enter the macOS Recovery partition.
Release the keys when you see the Apple logo on the screen.
SelectUtilities>Terminalto open a Terminal window.
Typeresetpasswordand pressReturnto kick off the Reset Password screen.
SelectI forgot my passwordfrom the available options.
Enter the password for the account’s Apple Account.
Apple sends an authentication code to another Apple equipment registered to the same Apple Account.
Enter the code in the field provided.
Enter the new password and, optionally, a password hint.
Your administrator password has been reset.
Having the login keychain locked from access is a good security measure.
They could also start sending and receive messages using your email account or use Messages to impersonate you.
1Password is good, but there are many others to choose from, including LastPass, Dashlane, andmSecure.
If any of the apps look interesting, check the manufacturer’s website.
Many times they include demos that aren’t available from inside the Mac App Store.
check that the Caps Lock key isn’t active when you throw in in your password.
That or any change in capitalization renders your case-sensitive password unacceptable.
Next, select thelockicon and enter youradmin password.
Press and hold theControlkey > choose the account you want to rename >Advanced Options.
Set your new account name, selectOK, then reset your Mac.
First, jump in as an admin, then select theAppleicon >System controls>Users & Groups.
Next, select theiicon next to the account you want to delete >Delete Account.
Choose a Home folder option (save, don’t change, delete), then selectDelete Account.
