Summary

This update includes reliability improvements to Windows Update Service components in all editions of Windows 10, version 1507, 1511, 1607, 1703, 1709, 1803, 1809, 1903, 1909, 2004, 20H2, 21H1, 21H2, and Windows 11, version 21H2, 22H2. 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 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. 

Note: Microsoft Update Health Tools are automatically deployed to Windows 10, version 1809 and later Windows devices connected to Windows Update. You can also manually deploy Microsoft Update Health Tools, For more information, see Announcing Update Health Tools.

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. Each version of Windows is supported for 18 months. After support ends, you must update to a newer version of Windows to continue receiving Windows updates and security fixes. To learn more about the Windows lifecycle, see Windows 10 lifecycle fact sheet and the Windows 11 lifecycle fact sheet.

Notes: 

  • For feature update information for Windows 10, version 1809, 1903, 1909, 2004, and 20H2, see KB 5001716.

  • 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.

  • 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 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

Important The standalone updates that are available from the Microsoft Update Catalog applies only to all editions of Windows 10, version 1507, 1511, 1607, 1703, 1709, and 1803.

Windows Server Update Services (WSUS)

No

See the other options.

Note This update is currently not needed on devices that are administered through Windows Server Update Services.

Note: All builds of Windows 10, versions 1507, 1511, 1607, 1703, 1709, 1803, 1809, 1903, 1909, 2004, 20H2, 21H1, 21H2, and Windows 11, version 21H2, 22H2 require this update.

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 11, version 22H2 (updated 10/6/2022)

File name

File size

Date

Time

Fileinfo.xml

2,118

28-Sep-2022

18:40

Packageinfo.xml

575

28-Sep-2022

18:40

Packagestructure.xml

331

28-Sep-2022

18:40

Prebvtpackageinfo.xml

385

28-Sep-2022

18:40

Windows10.0-kb4023057-x64.cab

951,517

26-Sep-2022

13:43

Compdb.xml

778

26-Sep-2022

13:42

Compdb.xml.cab

10,147

26-Sep-2022

13:43

Compdb_cab_publish.xml

479

26-Sep-2022

13:43

Compdb_publish.xml

587

26-Sep-2022

13:42

Unifiedinstaller.exe

128,360

24-Sep-2022

03:00

Updhealthtools.cab

885,483

26-Sep-2022

13:42

File name

File size

Date

Time

Fileinfo.xml

2,121

28-Sep-2022

18:40

Packageinfo.xml

575

28-Sep-2022

18:40

Packagestructure.xml

331

28-Sep-2022

18:40

Prebvtpackageinfo.xml

385

28-Sep-2022

18:40

Windows10.0-kb4023057-x86.cab

804,021

26-Sep-2022

08:00

Compdb.xml

773

26-Sep-2022

07:59

Compdb.xml.cab

10,126

26-Sep-2022

08:00

Compdb_cab_publish.xml

477

26-Sep-2022

08:00

Compdb_publish.xml

585

26-Sep-2022

07:59

Unifiedinstaller.exe

91,488

24-Sep-2022

02:53

Updhealthtools.cab

745,588

26-Sep-2022

07:59

Windows 11, version 21H2

File name

File size

Date

Time

Fileinfo.xml

2,118

25-Mar-2022

01:18

Packageinfo.xml

575

25-Mar-2022

01:18

Packagestructure.xml

331

25-Mar-2022

01:18

Prebvtpackageinfo.xml

385

25-Mar-2022

01:18

Windows10.0-kb4023057-x64.cab

938,673

24-Mar-2022

15:06

Compdb.xml

778

24-Mar-2022

15:06

Compdb.xml.cab

10,122

24-Mar-2022

15:06

Compdb_cab_publish.xml

479

24-Mar-2022

15:06

Compdb_publish.xml

587

24-Mar-2022

15:06

Unifiedinstaller.exe

128,368

24-Mar-2022

03:56

Updhealthtools.cab

873,932

24-Mar-2022

15:05

File name

File size

Date

Time

Fileinfo.xml

2,118

25-Mar-2022

01:19

Packageinfo.xml

575

25-Mar-2022

01:18

Packagestructure.xml

331

25-Mar-2022

01:19

Prebvtpackageinfo.xml

385

25-Mar-2022

01:19

Windows10.0-kb4023057-x86.cab

798,068

24-Mar-2022

11:12

Compdb.xml

773

24-Mar-2022

11:11

Compdb.xml.cab

10,142

24-Mar-2022

11:12

Compdb_cab_publish.xml

477

24-Mar-2022

11:12

Compdb_publish.xml

585

24-Mar-2022

11:11

Unifiedinstaller.exe

90,968

24-Mar-2022

03:26

Updhealthtools.cab

740,002

24-Mar-2022

11:11

Windows 10, version 20H2, 21H1, and 21H2

File name

File size

Date

Time

Fileinfo.xml

2,119

25-Mar-2022

01:18

Packageinfo.xml

575

25-Mar-2022

01:18

Packagestructure.xml

331

25-Mar-2022

01:18

Prebvtpackageinfo.xml

385

25-Mar-2022

01:18

Windows10.0-kb4023057-x64.cab

982,015

24-Mar-2022

14:31

Compdb.xml

779

24-Mar-2022

14:29

Compdb.xml.cab

10,118

24-Mar-2022

14:30

Compdb_cab_publish.xml

482

24-Mar-2022

14:30

Compdb_publish.xml

590

24-Mar-2022

14:29

Unifiedinstaller.exe

107,856

24-Mar-2022

04:12

Updhealthtools.cab

918,472

24-Mar-2022

14:28

File name

File size

Date

Time

Fileinfo.xml

2,119

25-Mar-2022

01:19

Packageinfo.xml

575

25-Mar-2022

01:19

Packagestructure.xml

331

25-Mar-2022

01:19

Prebvtpackageinfo.xml

385

25-Mar-2022

01:19

Windows10.0-kb4023057-x86.cab

834,940

24-Mar-2022

10:48

Compdb.xml

774

24-Mar-2022

10:47

Compdb.xml.cab

10,145

24-Mar-2022

10:47

Compdb_cab_publish.xml

480

24-Mar-2022

10:47

Compdb_publish.xml

588

24-Mar-2022

10:47

Unifiedinstaller.exe

84,816

24-Mar-2022

03:20

Updhealthtools.cab

778,460

24-Mar-2022

10:46

Windows 10, version 2004

File name

File size

Date

Time

Fileinfo.xml

2,126

27-Oct-2021

02:47

Packageinfo.xml

577

27-Oct-2021

02:47

Packagestructure.xml

331

27-Oct-2021

02:47

Prebvtpackageinfo.xml

387

27-Oct-2021

02:47

Windows10.0-kb4023057-x64.cab

1,012,220

26-Oct-2021

16:35

Compdb.xml

779

26-Oct-2021

23:34

Compdb.xml.cab

9,081

26-Oct-2021

23:35

Compdb_cab_publish.xml

482

26-Oct-2021

23:35

Compdb_publish.xml

590

26-Oct-2021

23:34

Unifiedinstaller.exe

131,400

26-Oct-2021

11:53

Updhealthtools.cab

941,910

26-Oct-2021

23:33

File name

File size

Date

Time

Fileinfo.xml

2,125

27-Oct-2021

02:47

Packageinfo.xml

577

27-Oct-2021

02:47

Packagestructure.xml

331

27-Oct-2021

02:47

Prebvtpackageinfo.xml

387

27-Oct-2021

02:47

Windows10.0-kb4023057-x86.cab

860,079

26-Oct-2021

12:52

Compdb.xml

774

26-Oct-2021

12:50

Compdb.xml.cab

9,073

26-Oct-2021

12:51

Compdb_cab_publish.xml

480

26-Oct-2021

12:51

Compdb_publish.xml

588

26-Oct-2021

12:51

Unifiedinstaller.exe

99,656

26-Oct-2021

04:01

Updhealthtools.cab

797,690

26-Oct-2021

12:50

Windows 10, version 1909

File name

File size

Date

Time

Fileinfo.xml

2,121

20-Feb-2022

03:29

Packageinfo.xml

575

20-Feb-2022

03:29

Packagestructure.xml

331

20-Feb-2022

03:29

Prebvtpackageinfo.xml

385

20-Feb-2022

03:29

Windows10.0-kb4023057-x64.cab

1,042,789

15-Feb-2022

17:07

Compdb.xml

779

15-Feb-2022

17:06

Compdb.xml.cab

10,145

15-Feb-2022

17:06

Compdb_cab_publish.xml

486

15-Feb-2022

17:06

Compdb_publish.xml

594

15-Feb-2022

17:06

Unifiedinstaller.exe

107,352

15-Feb-2022

06:34

Updhealthtools.cab

979,966

15-Feb-2022

17:05

File name

File size

Date

Time

Fileinfo.xml

2,119

20-Feb-2022

03:28

Packageinfo.xml

575

20-Feb-2022

03:28

Packagestructure.xml

331

20-Feb-2022

03:28

Prebvtpackageinfo.xml

385

20-Feb-2022

03:28

Windows10.0-kb4023057-x86.cab

874,584

15-Feb-2022

15:02

Compdb.xml

774

15-Feb-2022

15:01

Compdb.xml.cab

9,078

15-Feb-2022

15:01

Compdb_cab_publish.xml

484

15-Feb-2022

15:02

Compdb_publish.xml

592

15-Feb-2022

15:01

Unifiedinstaller.exe

82,760

15-Feb-2022

06:02

Updhealthtools.cab

821,621

15-Feb-2022

15:00

Windows 10, version 1903

File name

File size

Date

Time

Fileinfo.xml

2,114

10-Sep-2021

16:52

Packageinfo.xml

573

10-Sep-2021

16:51

Packagestructure.xml

331

10-Sep-2021

16:52

Prebvtpackageinfo.xml

383

10-Sep-2021

16:52

Windows10.0-kb4023057-x64.cab

1,074,688

09-Sep-2021

13:05

Compdb.xml

780

09-Sep-2021

13:04

Compdb.xml.cab

9,079

09-Sep-2021

13:04

Compdb_cab_publish.xml

486

09-Sep-2021

13:04

Compdb_publish.xml

594

09-Sep-2021

13:04

Unifiedinstaller.exe

129,848

09-Sep-2021

05:31

Updhealthtools.cab

1,004,685

09-Sep-2021

13:03

File name

File size

Date

Time

Fileinfo.xml

2,112

10-Sep-2021

16:52

Packageinfo.xml

573

10-Sep-2021

16:51

Packagestructure.xml

331

10-Sep-2021

16:52

Prebvtpackageinfo.xml

383

10-Sep-2021

16:52

Windows10.0-kb4023057-x86.cab

905,612

09-Sep-2021

10:18

Compdb.xml

774

09-Sep-2021

10:17

Compdb.xml.cab

9,070

09-Sep-2021

10:18

Compdb_cab_publish.xml

484

09-Sep-2021

10:18

Compdb_publish.xml

592

09-Sep-2021

10:17

Unifiedinstaller.exe

98,640

09-Sep-2021

05:24

Updhealthtools.cab

844,397

09-Sep-2021

10:16

Windows 10, version 1809

File name

File size

Date

Time

Fileinfo.xml

2,120

24-Jan-2022

22:48

Packageinfo.xml

575

24-Jan-2022

22:48

Packagestructure.xml

331

24-Jan-2022

22:48

Prebvtpackageinfo.xml

385

24-Jan-2022

22:48

Windows10.0-kb4023057-x64.cab

1,066,694

21-Jan-2022

15:40

Compdb.xml

779

21-Jan-2022

15:40

Compdb.xml.cab

9,065

21-Jan-2022

15:40

Compdb_cab_publish.xml

485

21-Jan-2022

15:40

Compdb_publish.xml

593

21-Jan-2022

15:40

Unifiedinstaller.exe

131,400

21-Jan-2022

06:19

Updhealthtools.cab

996,320

21-Jan-2022

15:39

File name

File size

Date

Time

Fileinfo.xml

2,120

24-Jan-2022

17:12

Packageinfo.xml

575

24-Jan-2022

17:11

Packagestructure.xml

331

24-Jan-2022

17:12

Prebvtpackageinfo.xml

385

24-Jan-2022

17:12

Windows10.0-kb4023057-x86.cab

903,778

21-Jan-2022

12:08

Compdb.xml

774

21-Jan-2022

12:07

Compdb.xml.cab

10,146

21-Jan-2022

12:07

Compdb_cab_publish.xml

483

21-Jan-2022

12:07

Compdb_publish.xml

591

21-Jan-2022

12:07

Unifiedinstaller.exe

99,648

21-Jan-2022

06:20

Updhealthtools.cab

840,987

21-Jan-2022

12:06

Windows 10, versions 1703, 1709, and 1803

File name

File size

Date

Time

Fileinfo.xml

641

14-May-2021

18:16

Packageinfo.xml

575

14-May-2021

18:15

Packagestructure.xml

168

14-May-2021

18:16

Prebvtpackageinfo.xml

385

14-May-2021

18:16

Windows10.0-kb4023057-x64.cab

1,899,120

12-May-2021

01:33

Windows10.0-kb4023057-x64.msi

2,043,904

12-May-2021

01:32

File name

File size

Date

Time

Fileinfo.xml

641

14-May-2021

18:15

Packageinfo.xml

575

14-May-2021

18:15

Packagestructure.xml

168

14-May-2021

18:15

Prebvtpackageinfo.xml

385

14-May-2021

18:15

Windows10.0-kb4023057-x86.cab

1,560,479

11-May-2021

11:06

Windows10.0-kb4023057-x86.msi

1,699,840

11-May-2021

11:05

Windows 10, versions 1507, 1511, and 1607

File name

File size

Date

Time

Fileinfo.xml

641

14-May-2021

18:16

Packageinfo.xml

575

14-May-2021

18:15

Packagestructure.xml

168

14-May-2021

18:16

Prebvtpackageinfo.xml

385

14-May-2021

18:16

Windows10.0-kb4023057-x64.cab

1,899,120

12-May-2021

01:33

Windows10.0-kb4023057-x64.msi

2,043,904

12-May-2021

01:32

File name

File size

Date

Time

Fileinfo.xml

641

14-May-2021

18:15

Packageinfo.xml

575

14-May-2021

18:15

Packagestructure.xml

168

14-May-2021

18:15

Prebvtpackageinfo.xml

385

14-May-2021

18:15

Windows10.0-kb4023057-x86.cab

1,560,479

11-May-2021

11:06

Windows10.0-kb4023057-x86.msi

1,699,840

11-May-2021

11:05

References

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

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