Microsoft has released KB4464330 for the Windows 10 October 2018 update which takes the OS to build 17763.55.
The update addresses a serious issue which can result in the deletion of a user profile when upgrading to the OS.
The changelog reads:
- Addresses an issue where an incorrect timing calculation may prematurely delete user profiles on devices subject to the “Delete user profiles older than a specified number of day” group policy.
- Security updates to Windows Kernel, Microsoft Graphics Component, Microsoft Scripting Engine, Internet Explorer, Windows Storage and Filesystems, Windows Linux, Windows Wireless Networking, Windows MSXML, the Microsoft JET Database Engine, Windows Peripherals, Microsoft Edge, Windows Media Player, and Internet Explorer.
Interestingly this is not believed to be the issue which has caused Microsoft to halt the roll-out of the October 2018 update, as most of those devices were consumer PCs without any special group policies in place.
The update will be pushed out to PCs on the October 2018 update and will presumably be slipstreamed into the October 2018 update before Microsoft resumes rolling out the update.