Look out for KB4023057: it is being released again for Windows 10 by Microsoft

[harlan4096]

In Groundhog Day, Phil Connors is trapped in a time loop in which he relives the same day over and over again. Some Windows 10 administrators may feel the same way when it comes the the Windows 10 update KB4023057, which Microsoft releases regularly anew.

Two mention just two previous events: In September 2018, Microsoft pushed the update to supported versions of Windows 10, and revealed little about the update itself, only that it addressed issues that could prevent "important Windows updates from being installed".

In August 2020, the update was released again, with the same description and no new information, other than the updated list of supported Windows 10 versions.

It is June 2021 now, and Microsoft released KB4023057 again; this time for all versions of the operating system from Windows 10 version 1511 to the latest Windows 10 version 21H1.

The description mentions the latest versions of the operating system, but does not reveal anything new about the update:

This update includes reliability improvements to Windows Update Service components in Windows 10, versions 1507, 1511, 1607, 1703, 1709, 1803, 1909, 2004, 20H2, and 21H1

This update includes files and resources that address issues that affect the update processes in Windows 10 that may prevent important Windows updates from being installed. These improvements help make sure that updates are installed seamlessly on your device, and they help improve the reliability and security of devices that are running Windows 10.

Microsoft notes that the update may make modifications to the system, including:

• Resetting network settings.
  
• Cleaning up Registry keys that may prevent the installation of updates.
  
• Repair disabled or corrupted Windows operating system components related to the updating of the installed version of Windows 10.
  
• Compress files in the user profile directory to free up disk space.
  
• Reset the Windows Update database to "repair the problems that could prevent updates from installing successfully".
  

While that sounds useful to Windows 10 customers who are stuck on a particular version, others may want it nowhere near their systems because of the changes that it could make on them.

The update is pushed out via Windows Update automatically to Home devices running any of the listed versions of the operating system.

To quote the article from 2020, here are some options to block the update from being installed on a device:
 

Windows 10 administrators who don't want their devices to be upgraded need to block the update from being installed; this can be done in a number of ways including hiding the update using Wushowhide.diagcab which can be downloaded from Microsoft, update blockers like Windows Update Blocker by Sordum.

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