• Windows 8.1 reached end of support (EOS) on January 10, 2023, at which point technical assistance and software updates are no longer provided. If you have devices running Windows 8.1, we recommend upgrading them to a more current, in-service, and supported Windows release. If devices do not meet the technical requirements to run a more current release of Windows, we recommend that you replace the device with one that supports Windows 11.

    Microsoft will not be offering an Extended Security Update (ESU) program for Windows 8.1. Continuing to use Windows 8.1 after January 10, 2023 may increase an organization’s exposure to security risks or impact its ability to meet compliance obligations. For more information, see Windows 8.1 support will end on January 10, 2023.

    We recommend upgrading to a later version of Windows. For more information, see Upgrade to a later version of Windows.

  • Windows Server 2012 R2 reached end of support (EOS) on October 10, 2023. Extended Security Updates (ESUs) are available for purchase and will continue for three years, renewable on an annual basis, until the final date on October 13, 2026. For more information, see Windows Server End of Support: Key Dates. For information about the procedure to continue receiving security updates, see KB5031043. We recommend upgrading to a later version of Windows Server. For more information, see Learn about upgrading Windows Server.

  • Windows Embedded 8.1 Industry Enterprise and Windows Embedded 8.1 Industry Pro reached end of support (EOS) on July 11, 2023. Therefore, technical assistance and software updates are no longer provided.

Summary

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

Install this update

To install this update, use one of the following release channels.

Available

Next Step

Yes

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

Available

Next Step

Yes

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

To download updates from the Update Catalog, see Steps to download updates from the Windows Update Catalog.

Available

Next Step

Yes

This update will automatically sync if you configure Products and Classifications as follows:

Product: Windows Server 2012 R2

Classification: Security Updates

For more information about configuring in WSUS, see Windows Server Update Services (WSUS).

For more information about configuring in Configuration Manager, see Synchronize software updates.

Prerequisites

Restart information

Removal information

Update replacement information

There are no prerequisites to apply this update.

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

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

This update replaces the previously released update KB5037021.

File Information

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

File name

File version

Date

Time

File size

httpai.dll

6.3.9600.22017

13-May-24

21:16

57,856

peerdistai.dll

6.3.9600.22017

13-May-24

21:16

72,192

PrintAdvancedInstaller.dll

6.3.9600.22017

13-May-24

21:32

102,400

msdtcadvancedinstaller.dll

6.3.9600.22017

13-May-24

21:15

257,536

netfxconfig.dll

6.3.9600.22017

13-May-24

21:49

34,816

ConfigureIEOptionalComponentsAI.dll

6.3.9600.22017

13-May-24

21:15

84,992

IEFileInstallAI.dll

6.3.9600.22017

13-May-24

21:10

68,096

servicemodelregai.dll

6.3.9600.22017

13-May-24

21:14

115,200

SetIEInstalledDateAI.dll

6.3.9600.22017

13-May-24

21:16

51,712

ceipfwdai.dll

6.3.9600.22017

13-May-24

21:11

228,352

bcdeditai.dll

6.3.9600.22017

13-May-24

21:18

287,232

appxreg.dll

6.3.9600.22017

13-May-24

21:42

14,848

RegisterIEPKeysAI.dll

6.3.9600.22017

13-May-24

21:13

19,968

cmipnpinstall.dll

6.3.9600.22017

13-May-24

21:48

248,832

appserverai.dll

6.3.9600.22017

13-May-24

21:46

146,432

RDWebAI.dll

6.3.9600.22017

13-May-24

21:29

140,800

tssdisai.dll

6.3.9600.22017

13-May-24

21:27

156,160

VmHostAI.dll

6.3.9600.22017

13-May-24

21:32

123,392

securebootai.dll

6.3.9600.22017

13-May-24

21:17

157,184

winsockai.dll

6.3.9600.22017

13-May-24

21:15

69,632

ws2_helper.dll

6.3.9600.22017

13-May-24

21:17

62,976

cleanupai.dll

6.3.9600.22017

13-May-24

21:16

33,792

wdscore.dll

6.3.9600.22017

13-May-24

21:17

276,480

CntrtextInstaller.dll

6.3.9600.22017

13-May-24

21:20

153,088

drvstore.dll

6.3.9600.22017

13-May-24

21:20

744,960

dpx.dll

6.3.9600.22017

13-May-24

21:10

345,088

msdelta.dll

6.3.9600.22017

13-May-24

21:17

499,712

mspatcha.dll

6.3.9600.22017

13-May-24

21:21

46,080

cmiv2.dll

6.3.9600.22017

13-May-24

21:49

3,300,352

cmiaisupport.dll

6.3.9600.22017

13-May-24

21:13

3,154,944

cmitrust.dll

6.3.9600.22017

13-May-24

21:17

418,304

WcmTypes.xsd

Not versioned

22-Apr-24

18:58

1,047

CbsMsg.dll

6.3.9600.22017

13-May-24

21:21

42,496

CbsCore.dll

6.3.9600.22017

13-May-24

21:11

1,609,728

TiWorker.exe

6.3.9600.22017

13-May-24

21:16

193,024

TiFileFetcher.exe

6.3.9600.22017

13-May-24

21:11

427,520

DrUpdate.dll

6.3.9600.22017

13-May-24

21:19

246,784

wrpint.dll

6.3.9600.22017

13-May-24

21:10

66,048

wcp.dll

6.3.9600.22017

13-May-24

21:19

2,855,424

cmiadapter.dll

6.3.9600.22017

13-May-24

21:14

139,264

smiengine.dll

6.3.9600.22017

13-May-24

21:04

922,624

smipi.dll

6.3.9600.22017

13-May-24

21:16

65,536

poqexec.exe

6.3.9600.22017

13-May-24

22:02

146,432

amd64_installed

Not versioned

22-Apr-24

18:55

9

bfsvc.dll

6.3.9600.22017

13-May-24

21:12

86,016

timezoneai.dll

6.3.9600.22017

13-May-24

21:18

101,888

GlobalInstallOrder.xml

Not versioned

22-Apr-24

18:58

1,249,919

luainstall.dll

6.3.9600.22017

13-May-24

21:17

53,248

fveupdateai.dll

6.3.9600.22017

13-May-24

21:15

61,952

ExtendedSecurityUpdatesAI.dll

6.3.9600.22017

13-May-24

21:46

215,040

mofinstall.dll

6.3.9600.22017

13-May-24

21:17

67,072

esscli.dll

6.3.9600.22017

13-May-24

21:16

388,608

mofd.dll

6.3.9600.22017

13-May-24

21:14

248,320

repdrvfs.dll

6.3.9600.22017

13-May-24

21:15

350,720

fastprox.dll

6.3.9600.22017

13-May-24

21:15

854,016

wbemcomn.dll

6.3.9600.22017

13-May-24

21:16

453,632

wbemcore.dll

6.3.9600.22017

13-May-24

21:14

1,148,928

wmiutils.dll

6.3.9600.22017

13-May-24

21:16

111,104

wbemprox.dll

6.3.9600.22017

13-May-24

21:16

35,840

wmicmiplugin.dll

6.3.9600.22017

13-May-24

21:10

508,928

sppinst.dll

6.3.9600.22017

13-May-24

21:10

769,024

cmifw.dll

6.3.9600.22017

13-May-24

21:14

97,280

FirewallOfflineAPI.dll

6.3.9600.22017

13-May-24

21:20

166,912

NetSetupAI.dll

6.3.9600.22017

13-May-24

21:18

65,024

NetSetupApi.dll

6.3.9600.22017

13-May-24

21:19

184,832

httpai.dll

6.3.9600.22017

13-May-24

21:06

55,296

peerdistai.dll

6.3.9600.22017

13-May-24

21:06

65,024

PrintAdvancedInstaller.dll

6.3.9600.22017

13-May-24

21:16

99,328

msdtcadvancedinstaller.dll

6.3.9600.22017

13-May-24

21:06

215,040

netfxconfig.dll

6.3.9600.22017

13-May-24

21:29

40,448

ConfigureIEOptionalComponentsAI.dll

6.3.9600.22017

13-May-24

21:06

76,800

IEFileInstallAI.dll

6.3.9600.22017

13-May-24

21:03

66,560

servicemodelregai.dll

6.3.9600.22017

13-May-24

21:06

96,768

SetIEInstalledDateAI.dll

6.3.9600.22017

13-May-24

21:06

49,152

ceipfwdai.dll

6.3.9600.22017

13-May-24

21:03

197,632

bcdeditai.dll

6.3.9600.22017

13-May-24

21:08

271,360

appxreg.dll

6.3.9600.22017

13-May-24

21:23

19,968

RegisterIEPKeysAI.dll

6.3.9600.22017

13-May-24

21:05

23,040

cmipnpinstall.dll

6.3.9600.22017

13-May-24

21:27

195,072

securebootai.dll

6.3.9600.22017

13-May-24

21:07

142,336

winsockai.dll

6.3.9600.22017

13-May-24

21:06

71,680

ws2_helper.dll

6.3.9600.22017

13-May-24

21:07

50,176

cleanupai.dll

6.3.9600.22017

13-May-24

21:06

37,376

wdscore.dll

6.3.9600.22017

13-May-24

21:07

208,384

CntrtextInstaller.dll

6.3.9600.22017

13-May-24

21:09

128,000

drvstore.dll

6.3.9600.22017

13-May-24

21:09

610,304

dpx.dll

6.3.9600.22017

13-May-24

21:03

265,216

msdelta.dll

6.3.9600.22017

13-May-24

21:07

398,336

mspatcha.dll

6.3.9600.22017

13-May-24

21:09

36,864

cmiv2.dll

6.3.9600.22017

13-May-24

21:28

2,257,408

cmiaisupport.dll

6.3.9600.22017

13-May-24

21:05

2,162,688

cmitrust.dll

6.3.9600.22017

13-May-24

21:07

286,720

WcmTypes.xsd

Not versioned

25-Apr-24

17:56

1,047

CbsMsg.dll

6.3.9600.22017

13-May-24

21:09

41,984

CbsCore.dll

6.3.9600.22017

13-May-24

21:03

1,381,888

TiWorker.exe

6.3.9600.22017

13-May-24

21:07

190,464

TiFileFetcher.exe

6.3.9600.22017

13-May-24

21:04

355,328

DrUpdate.dll

6.3.9600.22017

13-May-24

21:08

202,240

wrpint.dll

6.3.9600.22017

13-May-24

21:03

56,320

wcp.dll

6.3.9600.22017

13-May-24

21:09

2,408,960

cmiadapter.dll

6.3.9600.22017

13-May-24

21:06

121,856

smiengine.dll

6.3.9600.22017

13-May-24

20:59

750,080

smipi.dll

6.3.9600.22017

13-May-24

21:06

59,904

poqexec.exe

6.3.9600.22017

13-May-24

21:39

129,536

x86_installed

Not versioned

25-Apr-24

17:39

9

bfsvc.dll

6.3.9600.22017

13-May-24

21:04

82,432

timezoneai.dll

6.3.9600.22017

13-May-24

21:08

86,528

GlobalInstallOrder.xml

Not versioned

25-Apr-24

17:58

1,249,919

luainstall.dll

6.3.9600.22017

13-May-24

21:07

43,008

fveupdateai.dll

6.3.9600.22017

13-May-24

21:06

57,344

ExtendedSecurityUpdatesAI.dll

6.3.9600.22017

13-May-24

21:26

177,664

mofinstall.dll

6.3.9600.22017

13-May-24

21:07

64,000

esscli.dll

6.3.9600.22017

13-May-24

21:06

293,376

mofd.dll

6.3.9600.22017

13-May-24

21:06

204,800

repdrvfs.dll

6.3.9600.22017

13-May-24

21:06

277,504

fastprox.dll

6.3.9600.22017

13-May-24

21:06

670,208

wbemcomn.dll

6.3.9600.22017

13-May-24

21:07

386,048

wbemcore.dll

6.3.9600.22017

13-May-24

21:05

925,696

wmiutils.dll

6.3.9600.22017

13-May-24

21:07

90,624

wbemprox.dll

6.3.9600.22017

13-May-24

21:06

29,696

wmicmiplugin.dll

6.3.9600.22017

13-May-24

21:03

392,704

sppinst.dll

6.3.9600.22017

13-May-24

21:03

646,656

cmifw.dll

6.3.9600.22017

13-May-24

21:05

80,896

FirewallOfflineAPI.dll

6.3.9600.22017

13-May-24

21:08

140,800

NetSetupAI.dll

6.3.9600.22017

13-May-24

21:07

55,296

NetSetupApi.dll

6.3.9600.22017

13-May-24

21:08

124,928

References

Servicing stack updates

Servicing Stack Updates (SSU): Frequently Asked Questions

ADV990001 | Latest Servicing Stack Updates

Description of the standard terminology that is used to describe Microsoft software updates

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