I have an HP LaserJet 100 colorMFP M175nw and for a while, the scanner is not working anymore. If I open the the scanner via System Preferences -> Printers and Scanners I get the following popup mac popup: You do not have permission to open the application “HP Scanner 3” then the scanner dialog screen open with the following message: Failed to open a connection to the device (-21345)
BigSur 11.5
I tried the following:
- Restart the printer
- Restart my MacBook
- Delete printer from "Prnters and Scanners"
- Uninstalled old drivers and HP Easy Scan
- Installed HP Smart
The scanner is working from my Iphone with HP Smart so it is not broken.
Any ideas?