Shift Ctrl Alt F hotkey no longer works after windows update on 2 different computers

I updated windows to the newest version on both my Home and Office computers and now the Ctrl Shift Alt F hotkey no longer works on either machine. I can change the function to another hotkey and it will work, but muscle memory is a bugger to change.

Anyone know why this would suddenly have stopped working?

is windows reserving that combination for something? I can’t find any info about it at all.

Anyone else experience this?