Brother Printer issues with Sequoia 15.1 update

Check to see if it enabled in Sequoia.

System Settings-->Privacy and Security-->Local Network

I was having a similar problem printing using AirPrint after the installation of Sequoia. It printed from other devices and via USB. The solution -- which I found when my computer started losing connection to my network -- was to turn off the rotating private wifi setting that is now the default: Use private Wi-Fi addresses on Apple devices - Apple Support. That solved the problem of losing connection with my brand new Eero router and the brand new Brother printer.

Have you downloaded the newest driver? https://www.brother.be/nl-be/support/mfc-l3770cdw/downloads?srsltid=AfmBOoqWnXFmK37_RBfK6HjnsjzsVbyUyzq8rIW_mYCDOMiggRmAoL97

I have had the same issues. None of my HP printers are working. Apparently drivers supported were limited to MAC OS 14.

My cannon and brother lasers are working with generic drivers, I cannot scan.

Manufacturers were not ready for this. And unlike windows, mac community is limited. As far as I have experienced, every new os release from any institution has its adoption hassles. I recall windows xp not supporting drivers for early on devices from windows 95/98/ME. I remember using my first mac with leopard and later upgraded to another mac with mountain lion, my previous devices had difficulties to onboard.

With my new mac on the 4th gen chip it came pre-installed with sequoia, hence none of my printers are functioning at an optimal grade.

I was having the same issue and spend half the day on the line with I.T. yesterday to no avail but this just solved it in 2 seconds, so thank you! I think when I first updated I got hit with a pop up asking me if I wanted Brother to find & communicate with my network and hit the wrong button not realizing that is needed access since my Brother was connected directly by USB to my MacBook. The barrage of pop ups about all that stuff was very confusing.

That did it...I wish I had seen your post before I spent 2 hours trying to find a solution. You’re brilliant...thanks!

Thanks for that. That worked for me.