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Common problems for Connectivity Issues
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‎05-03-2021 09:29 AM

HP Recommended
Product: LaserJet Pro 400MFP
Operating System: Microsoft Windows 10 (64-bit)

Hi!

Just today all of a sudden my HP LaserJet Pro 400MFP has problems connecting to the WiFi. Reason - wrong passphrase. After several attempts to reenter the password it still displays the same error after the connection check.

It used to work just fine with the same WiFi network for years, nothing has changed so far.

What could be the reason behind this problem?

Thank you.

Category:
1 REPLY 1

‎05-03-2021 10:53 AM

HP Recommended

Hi,

What is your exact printer model? please clarify its product number as there are several models for the series.

 

Verifying the  latest firmware update would be the first steps to try with a temporary USB or Ethernet connection:

https://support.hp.com/us-en/document/c03754273

 

If that doesn't help, please clarify your router brand and model, any network change may cause a such, not necessarily after taking any action but may occur due to an auto router update for example.

 

Shlomi



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