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This will open the Keychain Access application. 

In Keychain Access...

• If the user remembers their old Keychain password:
  • Highlight login on the top left in the window that appears (listed under Keychains)
    
  • Select "Change Password for Keychain "login"" from the Edit menu
  • The user will be prompted to enter the old keychain Keychain password before being able to reset the password

• If the user does not remember their old Keychain password:
• Select "Delete Keychain "login"" from the File menu (Note:  it It MUST say "login". If it does not, quit Keychain Access and relaunch it.  Sometimes more than once.)
• Click on Delete References & Files
• • Quit Keychain Access
     
• Immediately log out, then have the user log back into their computer
   

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Alternatively, once in the  ~/Library/Keychains/ folder, move the long alpha-numeric keychain file to the desktop Desktop and restart the machine.  This will rebuild create a keychain new Keychain file once logged back in. All saved passwords will be lost using this method, but this will resolve the Keychain issue in extreme cases.

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