The KB4586781 update is aimed towards both v2004 and v20H2 (October 2020). Here’re the direct download links for the KB4586781 offline installer.
As part of the patch Tuesday, Microsoft released an update for v2004 and v20H2 as usual. Unlike the other previous updates, the KB4586781 is a cumulative update with a mandatory update path. This means that Windows 10 will install the update automatically using the built-in Windows update mechanism. Just like with the other cumulative updates, the KB4586781 contains a lot of different improvements and fixes to various parts of Windows 10. Though this is not a dedicated security update, this cumulative update still contains some security updates to various Windows 10 modules.
Some of the Windows 10 modules that got updates with KB4586781 include but not limited to Microsoft scripting engine, Windows input, and composition, wallet service, fundamentals, kernel, etc. All in all, KB4586781 is a pretty eventful update. Do keep in mind that being a cumulative update, this update will automatically install any previous updates if they are not already installed.
If you’ve paused the Windows 10 updates or if you want to manually install the KB4586781 update, use the links given below to download KB4586781 offline installer. After downloading, double-click on the installer file and follow the wizard to install the update.
KB4586781 Offline Installer Download Links
To make things easier for you, I found the direct download links for KB4586781 for both Windows 10 32-bit and 64-bit systems. Depending on your system type, download the update using the below links and install it like any other Windows software. After installing, restart the system and you are good to go.
For v20H2:
KB4586781 x84 (32-bit) offline installer (download size: 115.0 MB)
KB4586781 x64 (64-bit) offline installer (download size: 350.5 MB)
After installing the update, the build number will jump to 19042.630.
For v2004:
KB4586781 x86 (32-bit) offline installer (download size: 115.0 MB)
KB4586781 x64 (64-bit) offline installer (download size: 350.5 MB)
After installing the update, the build number will jump to 19041.630.
If you want KB4586781 download links for Windows Server, ARM64 based systems, or some other version then go to the Microsoft update catalog website to find the appropriate links. All you have to do is click on the Download button next to the appropriate version.
KB4586781 Changelog
Updates the 2020 DST start date for the Fiji Islands to December 20, 2020.
Security updates to the Microsoft Scripting Engine, Windows Input and Composition, Microsoft Graphics Component, the Windows Wallet Service, Windows Fundamentals, and the Windows Kernel.
https://support.microsoft.com/en-us/help/4586781/windows-10-update-kb4586781
