How to configure Windows/Linux to support absolute-mouse-mode for remote operation via KVM?

I am working on a project where we want to connect different dual-screen PC systems (mostly Windows+Linux) with a dualhead KVM switch. The KVM switch uses absolute mouse mode to position the mouse on the target system. Windows: For many Windows systems this works well for the 1st screen, but doesn't work for the 2nd screen. This fits to information I found that Microsoft restricted the absolute mouse mode to the 1st screen after a security update KB5003637 There seem to be special KVM mouse drivers that allow to get the absolute mouse functionality back for all connected screens, e.g. from Mat

Question by Juergen on Super User, licensed CC BY-SA. We show a short excerpt and link to the original thread as credit.