HP Envy 6400 all in one printer purple lights on permanently

[Howie69]

For reasons I cannot explain, when I went into my office today the purple light on the printer was showing and I cannot get it to change despite turning it on and off several times and now HP Smart cannot see it

[Nal_NR · Accepted solution]

Hi @Howie69 

Welcome to the HP Support Community.

I'd like to help!

I understand the printer is stuck with a purple light.

Light bar glows purple from the middle outward

Light bar glows blue when the printer is in the process of connecting to your wireless network.

Purple light moves from the center to the outer edges: The printer is in Auto Wireless Connect (AWC) mode and is waiting to connect to your computer or mobile device.

To reset the wireless connection, press and hold the Wireless button on the rear of the printer for 3 seconds, and then go to Wireless Printer Setup to restart the wireless setup process.

Light bar glows purple in the center: The printer is in Auto Wireless Connect (AWC) mode, and is waiting for password information in the HP Smart app. This state expires after 3 minutes and you must re-connect your device.

The outside edges of the light bar pulse purple, repeating and the wireless light blinks: The printer is in the process of connected to a wireless network using WPS Push Button mode.

You may refer to this document. 

Update Firmware

Hope this helps! Keep me posted for further assistance.
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