Hi Robert,
By default Protected Print mode is off and does not apply to older printers. Also, scanners work independently of Printers.
I dont see a full suite for Windows 11 on the HP page. Could you please try the Windows 10 suite and let me know?
https://support.hp.com/us-en/drivers/closure/hp-color-laserjet-pro-mfp-m377-series/model/8109049
Download and open the utility when prompted.
You can use the Windows Scan app from Microsoft Store to test the scanner.
https://apps.microsoft.com/detail/9wzdncrfj3pv?hl=en-US&gl=US
Please keep me updated.
Disclaimer:
The link included is a non-Microsoft website that would provide accurate and safe information. Watch out for ads on the site that are frequently classified as PUP (Potentially Unwanted Products). There is no need to buy paid products to fix your computers as they sometimes do more harm than good.