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Common problems for Connectivity Issues
We would like to share some of the most frequently asked questions about Printer Wi-Fi, Connectivity Issues and Offline Status. Check out this link: Printer Wi-Fi, Connectivity Issues and Offline Status..
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M31w factory reset.

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Mfp m31w laserjet pro
macOS 10.15 Catalina

I had to change my WiFi router because it stopped working. I can’t reset the WiFi on the printer. I need a factory reset. It won’t connect to my MacBook Air because I don’t have a USB-C to USB-B cable. 

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Welcome to the HP Support Community.


Here are the factory reset steps: Press wireless button over 20s, until wireless LED button, attention LED and power button LED start blinking, then release wireless button. Before restore network setting, click 'X' button or any other button to wake up printer first.


Let me know if this helps.


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I am an HP Employee

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