Servicing stack update for Windows 10, version 2004 and 20H2: November 10, 2020

Applies to: Windows 10

This update applies to the following:

  • ​Windows 10, version 2004 for 32-bit Systems
  • Windows 10, version 2004 for x64-based Systems
  • Windows 10, version 2004 for ARM64-based Systems
  • Windows Server, version 2004 (Server Core installation)
  • ​Windows 10, version 20H2 for 32-bit Systems
  • Windows 10, version 20H2 for x64-based Systems
  • Windows 10, version 20H2 for ARM64-based Systems


This update makes quality improvements to the servicing stack, which is the component that installs Windows updates. Servicing stack updates (SSU) makes sure that you have a robust and reliable servicing stack so that your devices can receive and install Microsoft updates.

How to get this update

Method 1: Windows Update 

This update is available through Windows Update. It will be downloaded and installed automatically.  

Method 2: Microsoft Update Catalog 

To get the stand-alone package for this update, go to the Microsoft Update Catalog website.

Method 3: Windows Server Update Services

This update is also available through Windows Server Update Services (WSUS).


There are no prerequisites to apply this update.

Restart information 

You don't have to restart your device after you apply this update.

Removal information

Servicing stack updates (SSUs) make changes to how updates are installed and cannot be uninstalled from the device.

Update replacement information 

  • For Windows 10, version 2004, this update replaces the previously released update KB4577266.
  • For Windows 10, version 20H2, this update does not replace any previously released update.

File Information

File verification

File information
The English (United States) version of this software update installs files that have the attributes that are listed in the following tables.


For information about SSUs, see the following articles:

For more information about Dynamic Updates, see the following articles:

Learn about the terminology that Microsoft uses to describe software updates.