Are you sure your Windows 10 has not reached End Of Support - Remember, it is not just an OS - it is "Windows as a Service"

Here is what Microsoft is saying

Servicing extensions for Windows 10

Windows 10 is being adopted rapidly by organizations of all sizes, and as customers deploy the product they are implementing a modern servicing methodology we refer to as Windows as a service.

Many customers – including MARS, Independence Blue Cross, and Accenture – have made significant progress in moving to Windows as a Service, but some have requested an extension to the standard 18 months of support for Windows 10 releases.  To help these customers, we are announcing an additional six months of servicing for the Enterprise and Education editions of Windows 10, versions 1607, 1703, and 1709. (Additional servicing for Windows 10, version 1511 was announced in November.)  This extension will be offered via normal channels.  The chart below outlines the impact of these extensions for each of the last four Windows 10 releases.

Release	Release date	End of support	End of additional servicing for Enterprise, Education
Windows 10, version 1511	November 10, 2015	October 10, 2017	April 10, 2018
Windows 10, version 1607	August 2, 2016	April 10, 2018	October 9, 2018
Windows 10, version 1703	April 5, 2017	October 9, 2018	April 9, 2019
Windows 10, version 1709	October 17, 2017	April 9, 2019	October 8, 2019

We will also offer additional paid servicing options for Windows 10 Enterprise and Education releases starting with Windows 10 version 1607. For more information, contact your Microsoft account team.

https://blogs.technet.microsoft.com/windowsitpro/2018/02/01/changes-to-office-and-windows-servicing-and-support/