Internet Connection

[Anned46]

I have a new internet router and cannot get my HP ENVY 6400 ALl in One to set up. I am using ATT Air.

[Kuroi_Kenshi]

Hi @Anned46,

Welcome to the HP Support Community!

Thanks for reaching out!

We're thrilled to have the opportunity to assist you and provide a solution.

I understand your HP Envy 6400 All-in-One isn’t connecting to your new AT&T Air router. Let’s go through a few steps to check what could be causing this.

Restart the printer and router
Power off the printer, unplug your AT&T Air router for 20 seconds, then turn everything back on.
This refreshes the network and helps the printer detect the new Wi-Fi.

Re-enable Wi-Fi Setup Mode on the printer
On the printer, press and hold the Wi-Fi button and the Cancel (X) button together for 3 seconds.
This puts the printer back into “Setup Mode” so HP Smart can find it.

Use HP Smart to reconnect the printer
Open the HP Smart app → Add Printer → Select your HP Envy 6400.
When prompted, enter your new Wi-Fi password and finish the setup.

Check the router’s Wi-Fi band
Your printer works only on 2.4 GHz, not 5 GHz.
Make sure your AT&T Air router is broadcasting a 2.4 GHz network (most routers combine them automatically).

Move the printer closer to the router
Place the printer within 6–10 feet of the router during setup.
AT&T Air uses a wireless gateway, so distance and walls can affect signal strength.

Reset the printer’s network settings (if needed)
On the printer: Press Setup → Network → Restore Network Settings.
Then retry adding it through HP Smart.

Check the Wi-Fi password carefully
AT&T Air passwords are case-sensitive.
Make sure there are no extra spaces or special characters being mis-typed.

I hope this helps.

I'm glad I could help! 😊 If this resolved your issue, please mark it as "Accepted Solution" and click "Yes" on "Was this reply helpful?" Your feedback not only keeps us going but also helps others find the solution faster! 👍✨

Take care and have an amazing day ahead! 🚀

Best regards,