u/According-Mode6013

Currently I'm on a dual boot setup which is arch + windows. Whenever I update arch (sudo pacman -Syu) I automatically get locked out of windows and cannot enable secure boot I tried everything from shim and sbctl but it doesn't seem to work at all. All I get is a red screen which says unauthorised changes done to Bios or operating system. I need a long term solution for the same. What can I do ?