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Is your HP DeskJet 3830 series scanner not working? Here is the solution Click here to view the instructions!
Common problems HP Solution Center not working : Adobe Flash Player Error and Unable to scan
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‎02-19-2022 10:24 AM

HP Recommended
Product: HP OfficeJet Pro 7720 Wide Format All-in-One Printer
Operating System: macOS 11.0 Big Sur

Impossible to open the scanner since I've updated OIS to Big Sur 11.6.

Error message :"Failed to open a connection to the device" (-21345)

Resetting HP software did not help

Category:
1 REPLY 1

‎02-19-2022 11:14 AM

HP Recommended

Hi,

Please follow below version of HP Easy Start, as soon as it launches open the top HP Easy Start menu and select Uninstall HP Software.

Follow the steps on screen and then click on Set Up New Device and follow the steps to reinstall the printer:

https://ftp.hp.com/pub/softlib/software12/HP_Quick_Start/osx/Applications/HP_Easy_Start.app.zip

 

As soon as HP Easy start prompts to install HP Smart, close HP Easy Start and press the Skip to Software Download button, then follow the steps on screen to complete the installation and check for any difference.

 

Shlomi



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