KB4474419 will not install

Agreed. MS needs to fix this.

This works for me too, thanks

I have an idea. It helped me.

I have two systems on PC - Windows 7 Pro and Linux. The run is made using the GRUB-loader. Update KB4474419 had a crack setup at boot time via the GRUB-loader. I switched the download directly to the Windows drive, downloaded and autonomously installed update KB4474419, rebooted the PC and got the installation confirmation. Then returned to download the GRUB-loader.

I have dual boot Windows 7 32bit and Xubuntu 64bit on an older Lenovo laptop with a core2duo

The update would happen and on reboot it would get to 32% and then fail and revert to prevous settings.

Then I followed one suggestion I found in this forum. On reboot enter the cmos and pick the drive I want to boot from. This bypasses the Linux bootloader for that session and voilà succes. The  next boot went as normal through the bootloader. Everything is as it is supposed to be. I'm OK till next January. 

I also have 32bit win7 running in a virtual machine under ubuntu on another computer. That update happened without problems.

I f you really need win7 that might be a way to do it.

Today's monthly roll up security update (KB4493472) is producing the same result for me.  The update doesn't configure properly upon restart and so fails to install. I presume this is because the roll up includes last month's problematic Sha-2 security update (KB4474419). Great. So am I to assume that none of the new security patches in this month's roll up took? This is just getting worse. I am ready to disconnect Windows 7 from the WAN and consider it as secure is it is going to get. I planned to do that in January anyway.