In terms of October 2018 Update (version 1809), Microsoft has updated to build number 17763.316. As this was a Patch Tuesday release, there were no new features but plenty of fixes. Among them were solving an issue in Microsoft Edge that was stopping the browser from connecting to sites with IP addresses.
Microsoft also fixed a Windows Hello for Business Hybrid Key Trust problem that would cause sign-ins to fail when Windows 2019 Server domain controllers (DC) are used. Elsewhere, a fix was also issued for HoloLens, specifically a bug that would bypass the lock screen.
Through the Patch Tuesday release, Microsoft rolled out fixes for 77 security flaws across Windows versions.
Looking specifically at Windows 10 October 2018 Update, security patches focused on Microsoft Edge, Windows Server, Microsoft Scripting Engine, Internet Explorer, Microsoft JET Database Engine, Windows Wireless Networking, Windows Storage and Filesystems, Windows Input and Compositions, Windows App Platform and Frameworks, and Windows Graphics.
April 2018 Update
Microsoft also updated and fixed Windows April 2018 Update (version 1803). Build 17134.590 features most the same security fixes as version 1809. One difference is support for top-level Edge and Internet Explorer for HTTP Strict Transport Security (HSTS) Preload.
One known issue from this update is the inability to pin a web link to the taskbar of State Menu. The company says a fix for this problem is in the works.
Windows Update Fix
Lastly, Microsoft also fixed Windows Update. The service has recently suffered DNS troubles that left Windows Update inaccessible over the last week. An outage in the DNS service provider caused the problem. A fix has now been issued:
“A software update to the external provider's DNS servers resulted in the distribution of corrupted DNS records that affected connectivity to the Windows Update service. The DNS records were restored by January 30, 2019 (00:10 UTC), but downstream effects continued,” explained Microsoft.
“We believe the issue to be fully mitigated because the majority of local internet service providers have refreshed their DNS servers, and customer services have been restored. If you are still encountering download failures, please contact your local ISP.”
“While this was not an issue with Microsoft's services, we take any service disruption for our customers seriously. We will work with partners to better understand this so we can provide higher quality service in the future even across diverse global network providers.”