With 25 years of experience covering Microsoft, I tend to focus a bit heavily on the software giant from Redmond. And one of the big topics this year, of course, has been a decided lack of software quality. Most recently---but not exclusively---with Windows 10 version 1809.
These problems are serious, and they're real. And they continue despite a 6-week gap between the original release of the October 2018 Update---which upgrades your PC to Windows 10 version 1809---and its re-release this past week. As Microsoft documents on its Windows 10 update history website, this update shipped with three fairly serious issues. One is described as a "known issue" while the other two are "upgrade blockers," meaning that they're so serious you won't ever see the Update until they're resolved.