HP 7645 will not scan after Sequoia update

[PapaRog]

After updating MacBook Pro to Sequoia 15.5 the HP 7645 will not longer scan.  I've tried everything HP describes.  Please someone who has been successful share your process.    

[Max3Aj]

@PapaRog, Welcome to HP Support Community. 

Thank you for posting your query, I will be glad to help you. 
Here's a step-by-step guide to help resolve the issue where your HP ENVY 7645 e-All-in-One Printer is no longer scanning after updating your MacBook Pro to macOS Sequoia 15.5:

Step-by-Step Troubleshooting

 Reset the Printer

Sometimes a simple reset can resolve hardware glitches:

• Turn off the printer.
• Unplug the power cord from both the printer and the wall outlet.
• Wait for 60 seconds.
• Plug it back in and turn on the printer.

Reinstall the Printer on macOS

Remove and re-add the printer to ensure macOS recognizes it correctly:

• Go to System Settings > Printers & Scanners.
• Select your HP ENVY 7645 and click Remove Printer.
• Re-add the printer by clicking the + button and selecting it from the list.

Use HP Smart App with Diagnose & Fix

HP Smart includes a tool that can automatically detect and fix scanning issues:

• Download or open the HP Smart app.
• In the app, go to the Printer menu > Diagnose & Fix.
• Follow the on-screen instructions.

HP Smart Diagnose & Fix

Check Scanner Functionality

To rule out hardware issues:

• Open the scanner lid.
• Press the Copy button on the printer.
• Watch if the scanner light moves across the glass. If it doesn’t, the scanner hardware may be faulty.

Update or Reinstall HP Drivers

macOS Sequoia may require updated drivers:

• Visit the HP Software & Driver Downloads page.
• Search for HP ENVY 7645 and download the latest macOS-compatible drivers.

Try HP Easy Scan (if available)

Sometimes HP Easy Scan works better with older models:

• Download from the Mac App Store.
• Open the app and try scanning.

You may refer to this document - Scanner Failure error on HP printers (Windows, macOS) | HP® Support
 

I hope this helps. 

Take care and have a good day. 

Please click “Accepted Solution” if you feel my post solved your issue, it will help others find the solution. Select "Yes" on the bottom left to say “Thanks” for helping! 

Max3Aj

HP Support