Has anyone successfully installed the Windows 7 December 2018 Security Rollup? On three different computers it fails for me with the exact same error: 8000FFFF. I've tried renaming the SoftwareDistribution folder to no avail. I also ran an SFC scan which came back clean. At first I thought it might have something to do with the computers being dual-booted with Linux (and thus the Windows bootloader was replaced with GRUB) but it just now failed on another computer that is not dual-booted...
All three machines have been clean-installed within about 1.5 years, and I don't do anything screwy to them that would mess anything up so I'm totally stumped on this one.
Anyone have some ideas on how to resolve this?