Microsoft released update Windows 10 KB4535996 with errors

Update KB4586781 for Windows 10 version 20H2 and 2004

11/14/2020 Windows 10 20H1 (2004) Updates

Microsoft has released cumulative update KB4586781 (Build 19042.630) for Windows 10 (version 20H2) and KB4586781 (Build 19041.630) for Windows 10 (version 2004) as part of patch Tuesday. How to download and install a new assembly.

What’s new?

Updated: 10.11. The KB4586781 update is available on Windows Update and the Microsoft Update Catalog as part of patch Tuesday.

Updated: 07.11. The KB4586781 update is available only through WSUS, a service for updating operating systems and Microsoft products.

Cumulative update KB4586781 (OS Build 19042.630) is intended for Windows 10 version 20H2 (October 2020 Update) based on x86, x64 (amd64), ARM64 and Windows Server (20H2) processors for x64 and ARM64-based systems. Updates are available as part of Tuesday patches.

Installing via Windows Update

Cumulative update 4586781 for PC is installed automatically through Windows Update. To check, go to Options> Update & Security and click Check for Updates.

A computer restart is required to complete the installation. After the upgrade, the build number of Windows 10 will change to 19042.630 for Windows 10 (version 20H2) and 19041.630 for Windows 10 (version 2004).


Security update KB4586864 – Servicing stack update (What is the “Servicing stack update”?) Is also available for installation. Microsoft has included Service Stack updates in Windows 10 Cumulative Updates and will no longer be offered separately.

Improvements and fixes KB4586781 (Builds 19042.630 and 19041.630)

This update includes quality updates. New system functions are not presented. List of key changes:

Adjusted the 2020 DST start date for Fiji Islands to December 20, 2020.
Security updates to Microsoft Scripting Engine, Windows Input and Composition, Microsoft Graphics Component, Windows Wallet Service, Windows Fundamentals, and Windows Kernel.
If you installed previous updates, this time only the new changes in the rollup package will be applied.

Known bugs:

Users of Input Method Editors for Chinese and Japanese may encounter problems with various tasks. You may experience input problems, unexpected results, or inability to enter text.
When you upgrade a device from Windows 10, version 1809 or a later version of Windows 10, you may experience loss of system and user certificates. The issue affects devices with the September 16, 2020 cumulative update installed when upgrading to a later version of Windows 10 from media or a source that does not have the October 13, 2020 cumulative update or later updates.

Download update

You can also download the update from the Microsoft Update Catalog and manually install it from the link below:

Links to download official updates are below:

Download x64 version
Download x86 version
Download ARM64 version
Windows Server 2019 update version