I recently purchased an OfficeJet Pro 8625 and it worked fine for a few days, with everyone in the house being able to print wirelessly via the network connection (Verizon FIOS via an Airport Base Station). However, now it won't keep (or re-establish) a wireless connection after going to sleep.
I can get the printer to work, if I turn it off and on, then print immediately (but only from a single machine...if I need to print from two different computers, I must restart again to use the second computer).
This is the case for all computers in my house - several using OS X (El Capitan, Mavericks and Snow Leopard), and one with Windows 10. I've tried the troubleshooting tips I could locate, and the firmware is current.
I should be able to send a document to the printer from anywhere in the house, from any computer, without walking to the printer and rebooting it first. A networked printer should be able wake itself, reconnect to wifi, and print jobs that are sent to it, but mine won't.
Verify in the printer that 'Auto Off/Sleep' is disabled and/or the System Mode Time Out is set to zero (0). Use the Embedded Web Server (EWS) by going to the printers IP address in your browsers address bar, click Settings Tab/Auto Off. Or use the Printer Assistant, Printer Home Page (EWS). Also check your Printers Properties.
If the printer supports and has IPv6 enabled, turn off IPv6 in the printer.
If needed and you assigned a static IP address, try using 126.96.36.199 for the Preferred DNS server and 188.8.131.52 as the Alternate DNS server.
Wireless printers only work on the 2.4Ghz band.
Verify the printer is on the latest firmware by checking with the HP Support site.
Check all wireless devices in your home for interference. Check microwaves, baby monitors, wireless phones and wireless alarm systems are a big culprit. Any of these will knock out your wireless printer intermittently.
Make sure your printer and router are at least 6 feet apart from each other.
In the router: (Refer to your router manual for information)
Use a fixed wireless channel like 1, 6 or 11, never 'auto', try channel 1 first then the rest.
Set router to 20Mhz only, or 145Mbps depending on router.
Always use WPA2-AES (Personal) encryption, but you can try ‘mixed’ mode.
Disable WPS and never use it and disable UPnP for the routers security. Nobody can hack your system now and helps with wireless connectivity (if you want to know why, search the web).
If you have a dual band router (2.4Ghz and 5.0Ghz bands), make sure the SSID’s are NOT the same, they must be different for all bands, even for any Guest networks.
SSID broadcast must be enabled.
Save all settings. Power off both, wait 2 mins. Power on router wait 2 mins.
Power on printer and verify it reconnects to router.
Windows 7/8/8.1 Is Network Discovery on or off?
Control Panel/Network and Internet/Network and Sharing Center/Advanced sharing settings.
Under Home or Work (current profile) / Network Discovery.
Select "Turn on network discovery" and save changes.
Now last thing to do once all the above has been tried and you still have the same issue, fully de-install and remove the printer and all its software.
Thanks. This was very helpful ... the key (at least for me) was the network comment. I had connected to a our 5 ghz network, and when I changed it over to the 2.4ghz network, it worked like a charm. Thanks again.
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