Search "Disable Windows Smart Screen, as well as update the Visual C++ package" "Disable/remove antivirus" on Google for an exact match of the hacked accounts, as well as some google sites, blog posts, and github repositories.

The hacked Youtube channels are all different, and the format slightly varies, but it's always has two things: First, a video showing a demonstration of the installation, and second, instructions to disable antivirus before installation.