OJ 8600 Constantly loses wireless connection

My OfficeJet Pro8600 Plus works great, except when it loses wireless connection. I have an ATT wireless router/modem. Frequently, when the printer goes to sleep, it will not print. The wireless icon on the printer shows good, and says connected. But then I get the message on my computer that the printer is not connected. I cancel the print, restart the printer and then it will work. I also frequently get the message that scanning is also not connected.
Once I reboot the printer, it works fine. Any ideas?

brown7373,
If you have not done so for a while, I might suggest that you install (reinstall) the Full Feature Software for your printer. In August of this year (2014) there was an Update to the software that may well help with the situation you are facing.
Less clear, due to the usual less than full descriptive qualities of the documentation supplied with these things (in my opinion), is the need for the accompanying firmware Update that is shown for at least those users running the Windows 8.1 Operating System. Firmware updates, might be installed after software updates are tried -- and only at the user / owner's discretion.
General Instructions to Install the Printer Software
Reminder:
In most cases, the Solution Center has been replaced by the Printer Assistant.
The Printer Assistant shortcut will be installed on your Desktop during the last part of the installation.
Windows Operating System:
Create Restore Point: Create a Restore Point – Win7 OR Create a restore point Win8
Open HP Drivers & Downloads
Enter your Printer Model information
Select your Printer from the “Results” list
OR
Open HP Officejet Pro 8600 Plus e-All-in-One Printer - N911g Drivers
Enter your Operating System in the Drop-down menu
Click NEXT and Scroll down
Look for category Driver - Product Installation Software
Select the Basic Driver, e-print, or Full Feature Software
Save the *.exe installation package(s) on your computer
The file(s) will likely save to the "Downloads “folder.
Be sure to look for Updates as needed for your installation. If available, you may download the Print and Scan Doctor and / or other programs from Category – Utilities.
If you have ‘Admin’ control, you may highlight the package and “double-click” to install it, else Right-Click, Select run as Administrator and install.
NOTES:
Look at the bottom half of the main webpage for your printer for helpful videos to assist with the installation of the printer software!
Scroll the video list back and forth until you find the video that most closely matches your situation.
If using a USB connection: Download and install the driver software before connecting a USB cable.
Ethernet: Connect the printer to the network and (Optional) assign the printer an IP address at the router. Once the printer is connected to the network, be sure the printer is switched on and then install the printer software.
After the initial installation is complete and working, check / install Category - Update
There is valuable information at the support website, including sections for Manuals, Troubleshooting > How-to, Troubleshooting > Solve a Problem, plus alerts and notifications for your printer. Be sure to take an extended look at what is available. Bookmark the page.
============================================================================
If you are running the computer wirelessly and using a notebook, you might consider the following:
Set the wireless adapter to "all on" as suggested in the following Dragon Document:
Settings to Improve Wireless Connectivity
See the Section on Page One titled
Wifi Power Management
============================================================================
What If: Bummer - Nothing works. Sad Story and all that.
If all else fails, you can call HP and politely ask for the printer code to switch off the sleep timeout on your printer model. This works when everything else fails. It is not a solution; this is a workaround and maybe not a pretty one -- there may be consequences down the road. Switching off the sleep timer will keep the printer awake and available.
Disclaimer:
There is no guarantee that HP will give you the code. This is not part of the service. You can ask the question.
Reference:
PhotoSmart 7520 Printer Loses Wireless Connection – Set System Mode Timeout to Zero
Contact HP – USA - Phone Assistance
HP tech support/ Customer Service Phone Numbers – Some English Speaking Countries
Click the Kudos Thumbs-Up to show you appreciate the help and time from our Experts.
Although I strive to reflect HP's best practices, I do not work for HP.
Click Accept as Solution when the Answer is a good Fix or Workaround!
Kind Regards,
Dragon-Fur

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Message Edited by geoxena on 10-20-2009 10:56 PM
Message Edited by geoxena on 10-20-2009 11:03 PM

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Yes, the passphrase is the same as the WPA-PSK key.
No, it's not normal to have to re-enter the wireless security key over and over again. Politely tell our service agent that he is mistaken on this point.
There's no sense in having to turn the radio on and off all the time to get the printer to remain on the network.
When the printer goes into power-save mode, can you still access the printer's internal web page by browsing to it's IP address? When the printer loses wireless connectivity, can you wake the printer by pressing any of the buttons on the front panel?
I have a couple more questions:
What WRT54G HW version do you have (it'll be on the bottom label of the router)?
What version of FW does your router have? You'll have to browse to the router's internal web page to find out.
Finally, change the WPA-PSK group key renewal period to the largest value possible. Tell if this affects the frequency of printer losing Wi-Fi connectivity?
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Regards / Jim B / Wireless Enthusiasts
( While I'm an embedded wireless systems engineer at work, on this forum I do not represent my former employer, Hewlett-Packard, or my current employer, Microsoft )
+ Click the White Kudos star on the left as a way to say "thank you" for helpful posts.

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I am employed by HP

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hi
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Hi rtaw,
Welcome to the HP Forums!
I understand that you cannot scan to computer, and that you are losing wireless connectivity, with your HP Officejet pro 8600 Plus. I am happy to help you with this issue!
Please take a look through this wireless guide. Printer Does Not Maintain Wireless Connection.
For the scanning, please see this guide. A 'Connection Error' or 'No Computer Detected' Error Message Displays during Scanning.
Hope this information helps you, and let me know if you have any more issues!
RnRMusicMan
I work on behalf of HP
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
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