Security Fail: Printer cannot connect to internet following new route

[Alex_MetsFan]

I have a HP Laserjet Pro 8500A, and we have recently put into place a new Router from our ISP. The HP cannot connect to the Internet, printing the Wireless Network Test Report I see Security:Fail.

In various attempts I have been prompted to put in the network passwork, and have been told that the password is not correct. Of course I am putting in the right password.

[sabretooth04]

Restore Network Defaults via the front panel.  The run the Wireless Setup Wizard via the front panel.  Now try to connect.

Replacing/changing your wireless router, try here.  

http://www8.hp.com/us/en/campaigns/wireless-printing-center/reconfiguring-system-help3.html

•    Make sure your router is set to a fixed wireless channel like 1, 6 or 11, never ‘auto’.  Try channel 1 first then the others one at a time.  
•    Make sure printer and router are at least 5 feet apart.  
•    Make sure you connect to, and have the 2.4G SSID band enabled with a different name than your 5.0G SSID band in your router.  
•    Make sure IPv6 is disabled in the printer.

Make and model of modem and router?

However if you have a Gateway (modem+router) device, all Gateway devices are terrible for wireless connectivity.   If this does not work, suggest you think about putting that gateway device in full bridge mode and install your own high quality router that YOU have full control over.

[Alex_MetsFan]

Router is model TC8717T, Technicolor provided by TWC/Spectrum.

We have tried all the fixes, didn't work

[Alex_MetsFan]

I did spend about 40 minutes on the phone with the TWC/Spectrum rep. 

The printer recognizes only one network profile. The profile is setup for strictly 2.4, and the rep confirmed it is set up for fixed not auto. Printer moved more than 5 feet away from Router. We rebooted both the printer and the modem.

[sabretooth04]

You have a Gateway device, modem + router.  These are terrible for wireless connectivity.  

In the printer reset back to Network Defaults via the front panel.  Now run the Wireless Setup Wizard from the front panel and try to connect.  Status now?   If no connection...

Try this, in the router temporarily disable all security.  Now try to connect to your unsecured SSID.  Are you successful?

If yes, go back and add WPA2-AES and try again.