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How to Enable CUPS for Printer Troubleshooting on macOS

Updated

This guide is for informational purposes only. Details are subject to change.

CUPS is a network printing service used by Mac computers. Enabling it is often the first step when troubleshooting Mac printing issues — it lets you manage installed printers and customize options like cash drawer setup.

How to Enable CUPS

Open a browser and go to https://localhost:631/printers/. If the web interface is disabled, follow these steps:

  1. Copy the command: cupsctl WebInterface=yes

  2. Click the magnifying glass icon in the top-right corner and search for Terminal.

  3. In Terminal, paste cupsctl WebInterface=yes and press Return.

    5_2015-07-27-paste-into-terminal.png

  4. Return to https://localhost:631/printers/ and sign in to view your installed printers.

    6_Screen_Shot_2019-09-07_at_11-56-16_AM.png

Your CUPS username and password are the same as your Mac login. You can verify your Mac username under System Preferences > Users & Groups.

  1. To change printer settings, click the printer name.

    7_2015-07-31-cups-printer-list.png

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