Schneider Electric no longer publishes new knowledge base articles for 4.4.3, but the old documentation is still accessible:
He couldn't do it manually. Not in twelve minutes. powerchute network shutdown 4.4.3 download
Version 4.4.3 is known to have security vulnerabilities (like Log4Shell). Schneider Electric often recommends upgrading to version 5.x or applying specific replacement file patches to stay safe. Schneider Electric no longer publishes new knowledge base
The PCNS 4.4.3 download file details are as follows: powerchute network shutdown 4.4.3 download