Microsoft has just kick-started the April 2019 Patch Tuesday rollout and a new patch is also available for Windows 10 October 2018 Update. Direct download links for Windows 10 KB4493509 are also live on Microsoft Update Catalog for manual installation.
Windows 10 Build 17763.437 includes both security and non-security improvements. Microsoft hasn’t fixed tons of bugs in this cumulative and most of the changes are aimed at enterprises or businesses. Build 17763.437 is only offered to Windows 10 October 2018 Update PCs and is shipped via Windows Update.
If you have the update services turned on, this patch should be automatically downloaded from Windows Update. If you would like to update the system right now, you can head to the Settings page and check for updates. The cumulative update can also be downloaded from the Microsoft Update Catalog.
KB4493509 Download Links for Windows 10
Windows 10 KB4493509 Direct Download Links: 32-bit (x86) and 64-bit.
KB4493509 Windows 10 Build 17763.437 Full Changelog
For enterprises, Microsoft has addressed an issue that was experienced when the user enabled per font end-user-defined characters (EUDC). The bug resulted in an issue where the system stopped working and booted to a blue screen.
Microsoft has fixed another bug that may cause apps that use MSXML6 to stop responding. Similarly, today’s patch also includes fixes for Internet Explorer where the browser and few other apps experience authentication issues.
Today’s update also includes the general security updates to Microsoft Graphics Component, Microsoft Scripting Engine, Windows Virtualization, Windows SQL components, Windows Input and Composition, Windows Storage and Filesystems, Windows MSXML, Windows Datacenter Networking, Windows Server, Windows Kernel, Microsoft JET Database Engine, Windows App Platform and Frameworks and Microsoft Edge.
As you can see, all the changes are aimed at enterprises. However, the update apparently also includes underhood fixes and general performance improvements.