*Installing the new ubuntu* Install grub onto the HDD where you are installing the OS, thanks!
*Installer installs grub over Windows Boot Manager on an SSD*..... *sigh*

One day all you dual booters may learn that windows and Linux don’t play well together.

Sometimes they do. I've got a Windows 10 machine that I dual boot Linux Mint with. No issue whatsoever, except I really would like the Windows installation to be the default when the grub menu comes up so if I don't hit anything, it goes to Windows rather than Linux. But that's just a minor issue.

Also dual-booting Windows and Kubuntu. No problems, outside of the fact that I had to change my drive to GPT.