KB4023057: Update for Windows 10 Update Service components

IMPORTANT If your device is out of support, it is no longer receiving security updates from Microsoft and may become more vulnerable to security risks and viruses. For this reason, we strongly recommend that you update to the latest version of Windows 10. Each version of Windows 10 is supported for 18 months. After support ends, you must update to a newer version of Windows 10 to continue receiving Windows updates and security fixes. To learn more about the Windows lifecycle, see Windows lifecycle fact sheet

Summary

This update includes reliability improvements to Windows Update Service components in consumer Windows 10, versions 1507, 1511, 1607, 1703, 1709, 1803, 1809, 1903, 1909, 2004, and 20H2. It may take steps to free up disk space on your device if you do not have enough disk space to install Windows updates.

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. 

Notes about this update

  • This update may request your device to stay awake longer to enable installation of updates.

    Note The installation will respect any user-configured sleep configurations and also your "active hours" when you use your device the most.

  • This update may try to reset network settings if problems are detected, and it will clean up registry keys that may be preventing updates from being installed successfully.

  • This update may repair disabled or corrupted Windows operating system components that determine the applicability of updates to your version of Windows 10.

  • This update may compress files in your user profile directory to help free up enough disk space to install important updates.

  • This update may reset the Windows Update database to repair the problems that could prevent updates from installing successfully. Therefore, you may see that your Windows Update history was cleared.

Important information about devices that have low disk space

When a Windows feature update is available for your device, you may see a message on the Windows Update settings page or elsewhere that asks you to free up disk space by removing files or applications that you do not use regularly. If you see this message, select Fix issues to free up disk space on your device.

After the Windows update has installed, some users may be prompted to restart their device. See Free up drive space in Windows 10 for more information about other ways that you can free up disk space on your device.

Compressing files

To help free up disk space, this update may compress files in your user profile directory so that Windows Update can install important updates. When files or folders are compressed, they appear as having two blue arrows overlaid on the icon. Depending on your File Explorer settings, you may see icons that look larger or smaller. The following screen shot shows an example of these icons.

Icons of compressed files

After you install the update, your files are restored to their original state, and the blue arrows disappear from the file icons in File Explorer. At any point during the update process, you should be able to access your files.

Microsoft Support notification

This update may display a notification on devices that are running low on space. If selected, this notification will open a Microsoft Support URL in the default browser with contact options for Microsoft support so you can easily get help freeing up space on your device.

This PC is running low on space

Disk Cleanup

When this update is installed, new options for cleaning up disk space will be available to make it easier for you to update your device when it is low on disk space. If a feature update fails due to a low disk space, you can help increase storage space by using the Disk Cleanup tool or selecting “Free up space now” in Settings / Storage. These will help you remove unused files and free up storage space before a major feature update.

Figure 1 Figure 2

How to get this update

Release Channel

Available

Next Step

Windows Update and Microsoft Update

Yes

None. This update will be downloaded and installed automatically from Windows Update.

It is also offered directly to Windows Update Client for some devices that have not installed the most recent updates.

Microsoft Update Catalog

Yes

To get the standalone package for this update, go to the Microsoft Update Catalog website.

Windows Server Update Services (WSUS)

No

See the other options.

Notes

  • Only consumer builds of Windows 10, versions 1507, 1511, 1607, 1703, 1709, 1803, 1809, 1903, 1909, 2004, and 20H2 require this update.

  • This update is not intended for use in enterprise environments.

File information

The English (United States) version of this software update installs files that have the attributes that are listed in the following tables. The dates and times for these files are listed in Coordinated Universal Time (UTC). The dates and times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and times may change when you perform certain operations on the files.

Windows 10, version 2004 and 20H2

File name

File size

Date

Time

Fileinfo.xml

2,114

28-Jan-2021

21:46

Packageinfo.xml

575

28-Jan-2021

21:46

Packagestructure.xml

331

28-Jan-2021

21:46

Prebvtpackageinfo.xml

385

28-Jan-2021

21:46

Windows10.0-kb4023057-x64.cab

1,021,799

28-Jan-2021

17:06

Compdb.xml

778

28-Jan-2021

17:04

Compdb.xml.cab

9,078

28-Jan-2021

17:05

Compdb_cab_publish.xml

479

28-Jan-2021

17:05

Compdb_publish.xml

587

28-Jan-2021

17:05

Unifiedinstaller.exe

134,464

28-Jan-2021

05:08

Updhealthtools.cab

950,345

28-Jan-2021

17:03

File name

File size

Date

Time

Fileinfo.xml

2,114

28-Jan-2021

21:46

Packageinfo.xml

575

28-Jan-2021

21:45

Packagestructure.xml

331

28-Jan-2021

21:46

Prebvtpackageinfo.xml

385

28-Jan-2021

21:46

Windows10.0-kb4023057-x86.cab

862,285

28-Jan-2021

13:12

Compdb.xml

774

28-Jan-2021

13:11

Compdb.xml.cab

9,080

28-Jan-2021

13:11

Compdb_cab_publish.xml

477

28-Jan-2021

13:11

Compdb_publish.xml

585

28-Jan-2021

13:11

Unifiedinstaller.exe

102,720

28-Jan-2021

05:24

Updhealthtools.cab

799,352

28-Jan-2021

13:09

Windows 10, version 1903 and 1909

File name

File size

Date

Time

Fileinfo.xml

2,109

08-Feb-2021

18:01

Packageinfo.xml

573

08-Feb-2021

18:01

Packagestructure.xml

331

08-Feb-2021

18:01

Prebvtpackageinfo.xml

383

08-Feb-2021

18:01

Windows10.0-kb4023057-x64.cab

1,180,395

07-Feb-2021

02:27

Compdb.xml

780

07-Feb-2021

02:26

Compdb.xml.cab

9,082

07-Feb-2021

02:27

Compdb_cab_publish.xml

486

07-Feb-2021

02:27

Compdb_publish.xml

594

07-Feb-2021

02:26

Unifiedinstaller.exe

130,368

06-Feb-2021

04:30

Updhealthtools.cab

1,110,280

07-Feb-2021

02:26

File name

File size

Date

Time

Fileinfo.xml

2,107

08-Feb-2021

18:02

Packageinfo.xml

573

08-Feb-2021

18:02

Packagestructure.xml

331

08-Feb-2021

18:02

Prebvtpackageinfo.xml

383

08-Feb-2021

18:02

Windows10.0-kb4023057-x86.cab

984,605

06-Feb-2021

22:36

Compdb.xml

774

06-Feb-2021

22:35

Compdb.xml.cab

9,079

06-Feb-2021

22:35

Compdb_cab_publish.xml

484

06-Feb-2021

22:35

Compdb_publish.xml

592

06-Feb-2021

22:35

Unifiedinstaller.exe

98,624

06-Feb-2021

04:15

Updhealthtools.cab

923,313

06-Feb-2021

22:34

Windows 10, version 1809

File name

File size

Date

Time

Fileinfo.xml

2,110

10-Feb-2021

00:54

Packageinfo.xml

573

10-Feb-2021

00:53

Packagestructure.xml

331

10-Feb-2021

00:54

Prebvtpackageinfo.xml

383

10-Feb-2021

00:54

Windows10.0-kb4023057-x64.cab

1,185,679

09-Feb-2021

16:26

Compdb.xml

780

09-Feb-2021

16:25

Compdb.xml.cab

9,093

09-Feb-2021

16:26

Compdb_cab_publish.xml

485

09-Feb-2021

16:26

Compdb_publish.xml

593

09-Feb-2021

16:25

Unifiedinstaller.exe

131,392

09-Feb-2021

08:46

Updhealthtools.cab

1,115,227

09-Feb-2021

16:24

File name

File size

Date

Time

Fileinfo.xml

2,108

10-Feb-2021

00:53

Packageinfo.xml

573

10-Feb-2021

00:53

Packagestructure.xml

331

10-Feb-2021

00:53

Prebvtpackageinfo.xml

383

10-Feb-2021

00:53

Windows10.0-kb4023057-x86.cab

991,325

09-Feb-2021

12:37

Compdb.xml

774

09-Feb-2021

12:36

Compdb.xml.cab

9,088

09-Feb-2021

12:37

Compdb_cab_publish.xml

483

09-Feb-2021

12:37

Compdb_publish.xml

591

09-Feb-2021

12:36

Unifiedinstaller.exe

99,664

09-Feb-2021

07:31

Updhealthtools.cab

929,572

09-Feb-2021

12:35

Windows 10, versions 1507, 1511, 1607, 1703, 1709, and 1803

File name

File size

Date

Time

Fileinfo.xml

641

29-Jan-2021

01:01

Packageinfo.xml

575

29-Jan-2021

01:01

Packagestructure.xml

168

29-Jan-2021

01:01

Prebvtpackageinfo.xml

385

29-Jan-2021

01:01

Windows10.0-kb4023057-x64.cab

1,855,346

28-Jan-2021

15:56

Windows10.0-kb4023057-x64.msi

1,994,752

28-Jan-2021

15:55

File name

File size

Date

Time

Fileinfo.xml

641

29-Jan-2021

01:02

Packageinfo.xml

575

29-Jan-2021

01:01

Packagestructure.xml

168

29-Jan-2021

01:02

Prebvtpackageinfo.xml

385

29-Jan-2021

01:02

Windows10.0-kb4023057-x86.cab

1,521,752

28-Jan-2021

13:19

Windows10.0-kb4023057-x86.msi

1,654,784

28-Jan-2021

13:18

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