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‎05-26-2025 02:00 PM

HP Recommended
Product: HP OfficeJet Pro 7740 Wide Format All-in-One Printer

UU_400_EB000U0707

Reply
1 REPLY 1

‎05-27-2025 11:10 AM

HP Recommended

Hi @elektropit 

 

Welcome to the HP Support Community!

 

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

 

The UU_400_EB000U0707 error on your HP OfficeJet Pro 7740 typically indicates a network or connectivity issue. Here are some steps to troubleshoot:

 

1. Check Network Connection

  • Ensure your printer is connected to the same Wi-Fi network as your computer.
  • Restart your router and printer to refresh the connection.
  • Try reconnecting the printer to Wi-Fi via the Wireless Setup Wizard on the printer’s control panel.

 

2. Restart Printer & Devices

  • Turn off the printer, unplug it for 60 seconds, then plug it back in and turn it on.
  • Restart your computer or mobile device.

 

3. Update the firmware on an HP printer

  • HP regularly releases new firmware versions for printer enhancements, app updates, or issue fixes. Update the firmware regularly to get the most out of your printer.
  • Click on the link below for instructions on how to update the firmware of your printer.
    https://support.hp.com/in-en/document/ish_1776648-1643972-16

 

4. Reinstall Printer Drivers

  • Uninstall existing drivers via Control Panel → Programs & Features.
  • Download and install the latest drivers from HP’s support site.

 

Try these steps and let me know if you need further guidance! Hopefully, this gets your printer back online.

 

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

I am an HP Employee.

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! 
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