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Printer Validation Failed

Envy 7640

I am unable to print.  Printer Validation Failed  message appears.  HP keeps sending ink, and I am not able to resolve problem.

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HP Support Agent
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Printer Validation Failed



Thanks for visiting the HP community. A very good day to you.  I have reviewed the post. It will be a genuine pleasure to help you here, Superb description and great assessment of the issue. Kudos to you for that.

  • Did you try to uninstall and reinstall the printer drivers at the root level?
  • Is the operating system Windows or Mac? What is the version of the operating system?
  • Did this occur after a software or OS update?
  • Is it a wireless or USB connection?

For now, try these steps:

If the issue continues and the operating system is windows, then perform a root level uninstallation and reinstallation of the windows drivers by following these steps:

  • Uninstall the printer from "programs and features" which can be accessed by doing a right-click on the Windows button (Please have the printer Off and disconnected during uninstallation.)
  • Check in device manager, if the printer is listed there, please delete it. (Right click on the Windows button to access device manager)
  • Go to devices and printers, in the control panel and select any printer listed there and you will get some options on the top. 
  • Click on print server properties. 
  • You will get a popup, click on the drivers tab and delete all the HP printer drivers listed there if any.
  • Delete all the instances of your printer listed in devices and printers.
  • Restart the PC.
  • Once the PC is on the desktop, press Win + R, it would bring a Run dialog box, 
  • Type %temp% in the run box and click Ok or hit the Enter button.
  • It would bring up the temporary files folder. Delete the files in the folder (You might not be able to delete all the files).
  • If possible, delete the printer from the registries using Regedit or using any other 3rd party application.
  • Ignore the Regedit option if it cannot be done.
  • Restart the PC again. 

Then download the latest full feature driver from http://hp.com/drivers and install it on the computer after selecting the correct operating system.

Connect the printer to your computer only when the setup prompts for the printer.

This should fix the issue.

Other things to try:

Update the router's firmware also if available.

Then run all the latest windows updates and ensure that they are correctly installed.


Good luck and keep me posted about the developments. If this helps, please mark this as Accepted Solution” as it will help several others with the same issue and give the post a Kudos for my efforts to help. Thank you and have a great week ahead. :)



I am an HP Employee

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