REMINDER

  • 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.

    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.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.

Additionally, this update adds a renewed signing certificate to the Secure Boot DB variable on UEFI Secure Boot systems. With this release, customers can “opt-in” to use the renewed certificate.

How to get this update

Install this update

Release Channel

Available

Next Step

Windows Update and Microsoft Update

Yes

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

Microsoft Update Catalog

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.

Windows Server Update Services (WSUS)

Yes

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

Product: Windows Server 2012 R2

Classification: Security Updates

For more information, see Configure classifications and products to synchronize.

Prerequisites 

There are no prerequisites to apply this update.

Restart information 

You don't have to restart your computer 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 

This update replaces the previously released update KB5034587.

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

6.3.9600.21811

8-Jan-24

21:16

57,856

peerdistai.dll

6.3.9600.21811

8-Jan-24

21:16

72,192

PrintAdvancedInstaller.dll

6.3.9600.21811

8-Jan-24

21:32

102,400

msdtcadvancedinstaller.dll

6.3.9600.21811

8-Jan-24

21:15

257,536

netfxconfig.dll

6.3.9600.21811

8-Jan-24

21:49

34,816

ConfigureIEOptionalComponentsAI.dll

6.3.9600.21811

8-Jan-24

21:15

84,992

IEFileInstallAI.dll

6.3.9600.21811

8-Jan-24

21:10

68,096

servicemodelregai.dll

6.3.9600.21811

8-Jan-24

21:15

115,200

SetIEInstalledDateAI.dll

6.3.9600.21811

8-Jan-24

21:16

51,712

ceipfwdai.dll

6.3.9600.21811

8-Jan-24

21:11

228,352

bcdeditai.dll

6.3.9600.21811

8-Jan-24

21:18

287,232

appxreg.dll

6.3.9600.21811

8-Jan-24

21:42

14,848

RegisterIEPKeysAI.dll

6.3.9600.21811

8-Jan-24

21:13

19,968

cmipnpinstall.dll

6.3.9600.21811

8-Jan-24

21:47

248,832

appserverai.dll

6.3.9600.21811

8-Jan-24

21:46

146,432

RDWebAI.dll

6.3.9600.21811

8-Jan-24

21:29

140,800

tssdisai.dll

6.3.9600.21811

8-Jan-24

21:27

156,160

VmHostAI.dll

6.3.9600.21811

8-Jan-24

21:32

123,392

securebootai.dll

6.3.9600.21811

8-Jan-24

21:18

90,112

winsockai.dll

6.3.9600.21811

8-Jan-24

21:15

69,632

ws2_helper.dll

6.3.9600.21811

8-Jan-24

21:17

62,976

cleanupai.dll

6.3.9600.21811

8-Jan-24

21:16

33,792

wdscore.dll

6.3.9600.21811

8-Jan-24

21:17

276,480

CntrtextInstaller.dll

6.3.9600.21811

8-Jan-24

21:20

153,088

drvstore.dll

6.3.9600.21811

8-Jan-24

21:20

744,960

dpx.dll

6.3.9600.21811

8-Jan-24

21:10

345,088

msdelta.dll

6.3.9600.21811

8-Jan-24

21:17

499,712

mspatcha.dll

6.3.9600.21811

8-Jan-24

21:21

46,080

cmiv2.dll

6.3.9600.21811

8-Jan-24

21:49

3,300,352

cmiaisupport.dll

6.3.9600.21811

8-Jan-24

21:13

3,154,944

cmitrust.dll

6.3.9600.21811

8-Jan-24

21:16

418,304

WcmTypes.xsd

Not versioned

8-Jan-24

18:46

1,047

CbsMsg.dll

6.3.9600.21811

8-Jan-24

21:21

42,496

CbsCore.dll

6.3.9600.21811

8-Jan-24

21:11

1,606,656

TiWorker.exe

6.3.9600.21811

8-Jan-24

21:16

193,024

TiFileFetcher.exe

6.3.9600.21811

8-Jan-24

21:11

427,520

DrUpdate.dll

6.3.9600.21811

8-Jan-24

21:19

246,784

wrpint.dll

6.3.9600.21811

8-Jan-24

21:10

66,048

wcp.dll

6.3.9600.21811

8-Jan-24

21:18

2,855,424

cmiadapter.dll

6.3.9600.21811

8-Jan-24

21:14

139,264

smiengine.dll

6.3.9600.21811

8-Jan-24

21:05

922,624

smipi.dll

6.3.9600.21811

8-Jan-24

21:16

65,536

poqexec.exe

6.3.9600.21811

8-Jan-24

22:01

146,432

amd64_installed

Not versioned

8-Jan-24

18:43

9

bfsvc.dll

6.3.9600.21811

8-Jan-24

21:12

77,312

timezoneai.dll

6.3.9600.21811

8-Jan-24

21:18

101,888

GlobalInstallOrder.xml

Not versioned

8-Jan-24

18:46

1,249,919

luainstall.dll

6.3.9600.21811

8-Jan-24

21:17

53,248

fveupdateai.dll

6.3.9600.21811

8-Jan-24

21:15

61,952

ExtendedSecurityUpdatesAI.dll

6.3.9600.21811

8-Jan-24

21:45

214,016

mofinstall.dll

6.3.9600.21811

8-Jan-24

21:17

67,072

esscli.dll

6.3.9600.21811

8-Jan-24

21:15

388,608

mofd.dll

6.3.9600.21811

8-Jan-24

21:15

248,320

repdrvfs.dll

6.3.9600.21811

8-Jan-24

21:15

350,720

fastprox.dll

6.3.9600.21811

8-Jan-24

21:15

854,016

wbemcomn.dll

6.3.9600.21811

8-Jan-24

21:16

453,632

wbemcore.dll

6.3.9600.21811

8-Jan-24

21:14

1,148,928

wmiutils.dll

6.3.9600.21811

8-Jan-24

21:16

111,104

wbemprox.dll

6.3.9600.21811

8-Jan-24

21:16

35,840

wmicmiplugin.dll

6.3.9600.21811

8-Jan-24

21:10

508,928

sppinst.dll

6.3.9600.21811

8-Jan-24

21:10

769,024

cmifw.dll

6.3.9600.21811

8-Jan-24

21:14

97,280

FirewallOfflineAPI.dll

6.3.9600.21811

8-Jan-24

21:19

166,912

NetSetupAI.dll

6.3.9600.21811

8-Jan-24

21:18

65,024

NetSetupApi.dll

6.3.9600.21811

8-Jan-24

21:19

184,832

httpai.dll

6.3.9600.21811

8-Jan-24

21:09

55,296

peerdistai.dll

6.3.9600.21811

8-Jan-24

21:09

65,024

PrintAdvancedInstaller.dll

6.3.9600.21811

8-Jan-24

21:19

99,328

msdtcadvancedinstaller.dll

6.3.9600.21811

8-Jan-24

21:09

215,040

netfxconfig.dll

6.3.9600.21811

8-Jan-24

21:31

40,448

ConfigureIEOptionalComponentsAI.dll

6.3.9600.21811

8-Jan-24

21:08

76,800

IEFileInstallAI.dll

6.3.9600.21811

8-Jan-24

21:05

66,560

servicemodelregai.dll

6.3.9600.21811

8-Jan-24

21:08

96,768

SetIEInstalledDateAI.dll

6.3.9600.21811

8-Jan-24

21:09

49,152

ceipfwdai.dll

6.3.9600.21811

8-Jan-24

21:06

197,632

bcdeditai.dll

6.3.9600.21811

8-Jan-24

21:10

271,360

appxreg.dll

6.3.9600.21811

8-Jan-24

21:26

19,968

RegisterIEPKeysAI.dll

6.3.9600.21811

8-Jan-24

21:07

23,040

cmipnpinstall.dll

6.3.9600.21811

8-Jan-24

21:30

195,072

securebootai.dll

6.3.9600.21811

8-Jan-24

21:10

83,456

winsockai.dll

6.3.9600.21811

8-Jan-24

21:08

71,680

ws2_helper.dll

6.3.9600.21811

8-Jan-24

21:09

50,176

cleanupai.dll

6.3.9600.21811

8-Jan-24

21:09

37,376

wdscore.dll

6.3.9600.21811

8-Jan-24

21:09

208,384

CntrtextInstaller.dll

6.3.9600.21811

8-Jan-24

21:11

128,000

drvstore.dll

6.3.9600.21811

8-Jan-24

21:11

610,304

dpx.dll

6.3.9600.21811

8-Jan-24

21:05

265,216

msdelta.dll

6.3.9600.21811

8-Jan-24

21:10

398,336

mspatcha.dll

6.3.9600.21811

8-Jan-24

21:12

36,864

cmiv2.dll

6.3.9600.21811

8-Jan-24

21:31

2,257,408

cmiaisupport.dll

6.3.9600.21811

8-Jan-24

21:07

2,162,688

cmitrust.dll

6.3.9600.21811

8-Jan-24

21:09

286,720

WcmTypes.xsd

Not versioned

18-Dec-23

19:39

1,047

CbsMsg.dll

6.3.9600.21811

8-Jan-24

21:12

41,984

CbsCore.dll

6.3.9600.21811

8-Jan-24

21:06

1,379,840

TiWorker.exe

6.3.9600.21811

8-Jan-24

21:09

190,464

TiFileFetcher.exe

6.3.9600.21811

8-Jan-24

21:06

355,328

DrUpdate.dll

6.3.9600.21811

8-Jan-24

21:11

202,240

wrpint.dll

6.3.9600.21811

8-Jan-24

21:05

56,320

wcp.dll

6.3.9600.21811

8-Jan-24

21:11

2,408,960

cmiadapter.dll

6.3.9600.21811

8-Jan-24

21:08

121,856

smiengine.dll

6.3.9600.21811

8-Jan-24

21:02

750,080

smipi.dll

6.3.9600.21811

8-Jan-24

21:09

59,904

poqexec.exe

6.3.9600.21811

8-Jan-24

21:42

129,536

x86_installed

Not versioned

18-Dec-23

19:36

9

bfsvc.dll

6.3.9600.21811

8-Jan-24

21:07

74,752

timezoneai.dll

6.3.9600.21811

8-Jan-24

21:10

86,528

GlobalInstallOrder.xml

Not versioned

18-Dec-23

19:39

1,249,919

luainstall.dll

6.3.9600.21811

8-Jan-24

21:09

43,008

fveupdateai.dll

6.3.9600.21811

8-Jan-24

21:08

57,344

ExtendedSecurityUpdatesAI.dll

6.3.9600.21811

8-Jan-24

21:29

177,152

mofinstall.dll

6.3.9600.21811

8-Jan-24

21:09

64,000

esscli.dll

6.3.9600.21811

8-Jan-24

21:09

293,376

mofd.dll

6.3.9600.21811

8-Jan-24

21:08

204,800

repdrvfs.dll

6.3.9600.21811

8-Jan-24

21:08

277,504

fastprox.dll

6.3.9600.21811

8-Jan-24

21:08

670,208

wbemcomn.dll

6.3.9600.21811

8-Jan-24

21:09

386,048

wbemcore.dll

6.3.9600.21811

8-Jan-24

21:08

925,696

wmiutils.dll

6.3.9600.21811

8-Jan-24

21:09

90,624

wbemprox.dll

6.3.9600.21811

8-Jan-24

21:09

29,696

wmicmiplugin.dll

6.3.9600.21811

8-Jan-24

21:05

392,704

sppinst.dll

6.3.9600.21811

8-Jan-24

21:05

646,656

cmifw.dll

6.3.9600.21811

8-Jan-24

21:08

80,896

FirewallOfflineAPI.dll

6.3.9600.21811

8-Jan-24

21:11

140,800

NetSetupAI.dll

6.3.9600.21811

8-Jan-24

21:10

55,296

NetSetupApi.dll

6.3.9600.21811

8-Jan-24

21:11

124,928

References

For information on SSUs, see the following articles:

Learn about the standard terminology that is used to describe Microsoft software updates.

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