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Apple devices store your network password information locally in what Apple calls the "Keychain".  When you change your network password, it is not automatically updated in the Keychain. This will cause an authentication problem when you try to print.

Keychain Entry Deletion

  1. From the Mac desktop, select Go from the menu bar and then select Utilities from the drop-down list.
    macOS Go menu with Utilities highlighted

  2. In the Utilities window, select Keychain Access.
    macOS Utilities window with Keychain Access selected

  3. In the Keychain Access window, find the printer you have installed on your computer.  It will start with either "ADMINPRINT-" OR "STPRINT-" depending on the printer you have installed.  Select the printer then press the delete key.
    macOS Keychain Access window example with ADMINPRINT highlighted

  4. Once the printer entry has been deleted from the Keychain Access screen, close that window.
  5. Go to the macOS print queue and delete any print jobs that are pending or paused by clicking the "X" button next to the job(s).
    macOS Print Queue example

  6. Once any pending jobs have been deleted, reboot the computer.  After reboot, try printing again to the printer. The authentication window will prompt for your domain username and password.  Enter your credentials and ensure the “Remember this password in my keychain” checkbox is checked (otherwise you will have to enter your credentials every time you need to print).
    macOS authentication window

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