https://www.theverge.com/2018/11/13/18090978/microsoft-windows-10-october-2018-update-november-release

Microsoft is releasing its Windows 10 October 2018 Update again today, after bugs forced the company to pull it offline last month. A number of Windows 10 users reported missing files after the update was released in early October. While Microsoft did re-release the update to beta testers, it has taken the company more than a month to fully test it and release it more generally today.

“In addition to extensive internal validation, we have taken time to closely monitor feedback and diagnostic data from our Windows Insiders and from the millions of devices on the Windows 10 October Update, and we have no further evidence of data loss,” explains Microsoft’s John Cable, director of program management for Windows servicing and delivery.