I hope I'm posting this in the right place. I've just had an email about the payroll year end update being mandatory from Monday. Does this mean I won't be able to get in my program without installing it? Why do they keep making them mandatory

I hope I'm posting this in the right place. I've just had an email about the payroll year end update being mandatory from Monday. Does this mean I won't be able to get in my program without installing it? Why do they keep making them mandatory?