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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: HP printer is offline or unavailable.
HP Recommended

I reset printer and now WiFi is disconnected. It still wants a password to connect to WiFi. It will not recognize wifi password. Says 'Onvalid Passphrase' 

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HP Recommended

HP Color LaserJet Pro MFP M277

I reset printer and now phone is connected to printer but printer not connected to WiFi. It will not accept WiFi password. I know you said maybe PIN might work by cartridges but what number and what location would that be? There are several numbers there. 

 

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