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Common problems HP Solution Center not working : Adobe Flash Player Error and Unable to scan
We would like to share some of the most frequently asked questions about HP Solution Center not working : Adobe Flash Player Error and Unable to Scan.

‎04-12-2026 01:37 PM

HP Recommended

My scanner was blocked after the upgrade to MacOS 26.4 (Tahoe) - March 2026.

I power cycled the printer and checked for firmware updates,

(My printer, HP M477 is about 10 years old and I found no useful documents in HP Support or Apple Support)

Scanner blocked error message.jpg

The fix required me to go into the Local Network devices and "allow" it again

Start with:   Privacy Settings

Local Network.jpg

Settings > Privacy & Security > Local Network > HP Scanner 3.app

HP Scanner permission switch.jpg <- flip switch = should be Green

 

 

FYI: The odd thing is that my other computers with the same MacOS version were still able to scan.  That suggested to me that the printer/scanner was OK, it was a local problem on the one computer.  Also, upgrading the MacOS from 26.4 to 26.4.1 did not change anything.

 

MacOS 26.4

Apple M1 Ultra - "Studio" computer

HP M477fdw multifunction networked AirPrint Color LaserJet/Scanner

 

P.S. It's a great home office printer scanner.  I use it daily and I would buy another one if it ever broke....

 

 

 

Russ Hodes
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