Deskjet D2660 - Error 808 - failed to load PS5UI.DLL and UNIDRVUI.DLL

[floen_]

I downloaded the drivers for my old Deskjet D2660 printer with the windows built-in solution (they came up as Deskjet 2020 series drivers), and they appeared to install correctly. However, no matter what I try, I cannot get any document to print.

Here are the solutions I've tried:

• Power cycled the printer by removing all sources of power for more than 30 seconds.
• Tried switching between DOT4_001 and USB001 printer ports
• Applied registry edits from this forum post (https://h30434.www3.hp.com/t5/Printer-Setup-Software-Drivers/Printer-Driver/td-p/6337354)
• Removed the printer in device settings; deleted C:\Windows\System32\spool\drivers\W32X86 and C:\Windows\System32\spool\drivers\x64 directories; restarted my computer; and reinstalled the drivers.

A possible clue is the presence of two different 808 Errors in the Event Viewer, which occur every time the printer is connected:

The print spooler failed to load a plug-in module C:\WINDOWS\system32\spool\DRIVERS\x64\3\PS5UI.DLL, error code 0x7E.

The print spooler failed to load a plug-in module C:\WINDOWS\system32\spool\DRIVERS\x64\3\UNIDRVUI.DLL, error code 0x7E.

Indeed, these .dll files are not in the indicated directory.

Any help would be much appreciated.

[Hawks_Eye]

Hi @floen_ 

Welcome to the HP Support Community!

Thanks for posting your query! We're here to help you get back up and running.

Here are some steps you can take to troubleshoot the issue with your HP Deskjet D2660 printer on Windows 11:

Check Compatibility

1. Ensure Compatibility: Verify that the printer drivers you downloaded are compatible with Windows 11. The Deskjet D2660 may require updated drivers that are specifically compatible with Windows 11.

Reinstall Drivers

1. Uninstall and Reinstall Drivers:
   • Uninstall: Go to Control Panel > Devices and Printers, right-click on your HP Deskjet D2660 or Deskjet 2020 series printer, and select Remove device.
   • Reinstall: Download the latest drivers directly from the HP website or use Windows Update to find appropriate drivers.

Verify Connections

1. Check Connections: Make sure the USB cable is securely connected to both the printer and the computer. Try using another USB port on your computer.

Test Print Functionality

1. Print Test Page:
   • Go to Control Panel > Devices and Printers.
   • Right-click on your printer and select Printer properties.
   • Click on Print Test Page to see if a test page prints successfully.

Check Printer Ports

1. Switch Printer Ports:
   • Open Control Panel > Devices and Printers.
   • Right-click on your printer and select Printer properties.
   • Go to the Ports tab, and cycle through different ports like DOT4_001, USB001, etc., to see which works.

Update Printer Firmware

1. Update Firmware: Ensure your printer’s firmware is up to date. Go to HP’s website to find firmware updates for your model.

Set Printer as Default

1. Set as Default Printer:
   • Go to Control Panel > Devices and Printers.
   • Right-click on your HP Deskjet D2660 and select Set as default printer.

Check Printer Status

1. Check Printer Status:
   • Ensure the printer status in Control Panel > Devices and Printers shows Ready. If it shows Offline, right-click and select Use printer online.

Restart Print Spooler Service

1. Restart Print Spooler:
   • Press Win + R, type services.msc, and press Enter.
   • Locate Print Spooler, right-click, and select Restart.

Run Windows Troubleshooter

1. Run Troubleshooter:
   • Go to Settings > Update & Security > Troubleshoot.
   • Select Printer and run the troubleshooter.

Check for Windows Updates

1. Windows Update: Ensure your Windows 11 is up to date, as updates may include important drivers for your printer.

If my response helped, please mark it as an Accepted Solution! ✅ It helps others and spreads support. 💙 Also, tapping "Yes" on "Was this reply helpful?" makes a big difference! Thanks! 😊

Take care, and have an amazing day!

Regards, 

Hawks_Eye

[floen_]

Hello @Hawks_Eye,

Thank you for your help. It is very appreciated.

How can I know whether the drivers are compatible with Windows 11? If I installed them through the Windows built-in solution, I assume that they must be compatible then, right?

I've tried all your other solutions to no avail, and I wasn't able to find any firmware files for the Deskjet D2660.

Are you able to speak to the failed to load PS5UI.DLL and UNIDRVUI.DLL 808 errors?

Thank you for your help,

Florent