REMINDER

  • Windows 8.1 reached end of support 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 Windows 10: FAQ Upgrade to Windows 11: FAQ

  • For Windows Server 2012 R2, the end of support (EOS) date is October 10, 2023. Extended Security Updates (ESUs) will be available for purchase no later than October 2022, but available for installation after the EOS date, October 10, 2023. ESUs 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. 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.

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.

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

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 KB5027574.

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

6.3.9600.21111

10-Jul-23

21:02

55,296

peerdistai.dll

6.3.9600.21111

10-Jul-23

21:02

65,024

PrintAdvancedInstaller.dll

6.3.9600.21111

10-Jul-23

21:12

99,328

msdtcadvancedinstaller.dll

6.3.9600.21111

10-Jul-23

21:02

215,040

netfxconfig.dll

6.3.9600.21111

10-Jul-23

21:25

40,448

ConfigureIEOptionalComponentsAI.dll

6.3.9600.21111

10-Jul-23

21:02

76,800

IEFileInstallAI.dll

6.3.9600.21111

10-Jul-23

20:59

66,560

servicemodelregai.dll

6.3.9600.21111

10-Jul-23

21:02

96,768

SetIEInstalledDateAI.dll

6.3.9600.21111

10-Jul-23

21:02

49,152

ceipfwdai.dll

6.3.9600.21111

10-Jul-23

20:59

197,632

bcdeditai.dll

6.3.9600.21111

10-Jul-23

21:04

271,360

appxreg.dll

6.3.9600.21111

10-Jul-23

21:20

19,968

RegisterIEPKeysAI.dll

6.3.9600.21111

10-Jul-23

21:01

23,040

cmipnpinstall.dll

6.3.9600.21111

10-Jul-23

21:24

195,072

securebootai.dll

6.3.9600.21111

10-Jul-23

21:04

70,656

winsockai.dll

6.3.9600.21111

10-Jul-23

21:02

71,680

ws2_helper.dll

6.3.9600.21111

10-Jul-23

21:03

50,176

cleanupai.dll

6.3.9600.21111

10-Jul-23

21:02

37,376

wdscore.dll

6.3.9600.21111

10-Jul-23

21:03

208,384

CntrtextInstaller.dll

6.3.9600.21111

10-Jul-23

21:05

128,000

drvstore.dll

6.3.9600.21111

10-Jul-23

21:05

610,304

dpx.dll

6.3.9600.21111

10-Jul-23

20:59

265,216

msdelta.dll

6.3.9600.21111

10-Jul-23

21:03

398,336

mspatcha.dll

6.3.9600.21111

10-Jul-23

21:05

36,864

cmiv2.dll

6.3.9600.21111

10-Jul-23

21:25

2,257,408

cmiaisupport.dll

6.3.9600.21111

10-Jul-23

21:01

2,162,688

cmitrust.dll

6.3.9600.21111

10-Jul-23

21:03

286,720

WcmTypes.xsd

Not versioned

30-Jun-23

19:09

1,047

CbsMsg.dll

6.3.9600.21111

10-Jul-23

21:05

41,984

CbsCore.dll

6.3.9600.21111

10-Jul-23

20:59

1,379,328

TiWorker.exe

6.3.9600.21111

10-Jul-23

21:03

190,464

TiFileFetcher.exe

6.3.9600.21111

10-Jul-23

20:59

355,328

DrUpdate.dll

6.3.9600.21111

10-Jul-23

21:04

202,240

wrpint.dll

6.3.9600.21111

10-Jul-23

20:59

56,320

wcp.dll

6.3.9600.21111

10-Jul-23

21:05

2,408,448

cmiadapter.dll

6.3.9600.21111

10-Jul-23

21:02

121,856

smiengine.dll

6.3.9600.21111

10-Jul-23

20:55

750,080

smipi.dll

6.3.9600.21111

10-Jul-23

21:02

59,904

poqexec.exe

6.3.9600.21111

10-Jul-23

21:35

129,536

x86_installed

Not versioned

30-Jun-23

19:06

9

bfsvc.dll

6.3.9600.21111

10-Jul-23

21:00

74,752

timezoneai.dll

6.3.9600.21111

10-Jul-23

21:04

86,528

GlobalInstallOrder.xml

Not versioned

30-Jun-23

19:09

1,249,919

luainstall.dll

6.3.9600.21111

10-Jul-23

21:03

43,008

fveupdateai.dll

6.3.9600.21111

10-Jul-23

21:02

57,344

ExtendedSecurityUpdatesAI.dll

6.3.9600.21111

10-Jul-23

21:22

158,720

mofinstall.dll

6.3.9600.21111

10-Jul-23

21:03

64,000

esscli.dll

6.3.9600.21111

10-Jul-23

21:02

293,376

mofd.dll

6.3.9600.21111

10-Jul-23

21:02

204,800

repdrvfs.dll

6.3.9600.21111

10-Jul-23

21:02

277,504

fastprox.dll

6.3.9600.21111

10-Jul-23

21:02

670,208

wbemcomn.dll

6.3.9600.21111

10-Jul-23

21:03

386,048

wbemcore.dll

6.3.9600.21111

10-Jul-23

21:01

925,696

wmiutils.dll

6.3.9600.21111

10-Jul-23

21:03

90,624

wbemprox.dll

6.3.9600.21111

10-Jul-23

21:02

29,696

wmicmiplugin.dll

6.3.9600.21111

10-Jul-23

20:59

392,704

sppinst.dll

6.3.9600.21111

10-Jul-23

20:58

646,656

cmifw.dll

6.3.9600.21111

10-Jul-23

21:01

80,896

FirewallOfflineAPI.dll

6.3.9600.21111

10-Jul-23

21:04

140,800

NetSetupAI.dll

6.3.9600.21111

10-Jul-23

21:03

55,296

NetSetupApi.dll

6.3.9600.21111

10-Jul-23

21:04

124,928

File name

File version

Date

Time

File size

httpai.dll

6.3.9600.21111

10-Jul-23

21:23

57,856

peerdistai.dll

6.3.9600.21111

10-Jul-23

21:23

72,192

PrintAdvancedInstaller.dll

6.3.9600.21111

10-Jul-23

21:39

102,400

msdtcadvancedinstaller.dll

6.3.9600.21111

10-Jul-23

21:23

257,536

netfxconfig.dll

6.3.9600.21111

10-Jul-23

21:57

34,816

ConfigureIEOptionalComponentsAI.dll

6.3.9600.21111

10-Jul-23

21:23

84,992

IEFileInstallAI.dll

6.3.9600.21111

10-Jul-23

21:17

68,096

servicemodelregai.dll

6.3.9600.21111

10-Jul-23

21:22

115,200

SetIEInstalledDateAI.dll

6.3.9600.21111

10-Jul-23

21:23

51,712

ceipfwdai.dll

6.3.9600.21111

10-Jul-23

21:19

228,352

bcdeditai.dll

6.3.9600.21111

10-Jul-23

21:26

287,232

appxreg.dll

6.3.9600.21111

10-Jul-23

21:50

14,848

RegisterIEPKeysAI.dll

6.3.9600.21111

10-Jul-23

21:21

19,968

cmipnpinstall.dll

6.3.9600.21111

10-Jul-23

21:55

248,832

appserverai.dll

6.3.9600.21111

10-Jul-23

21:54

146,432

RDWebAI.dll

6.3.9600.21111

10-Jul-23

21:37

140,800

tssdisai.dll

6.3.9600.21111

10-Jul-23

21:35

156,160

VmHostAI.dll

6.3.9600.21111

10-Jul-23

21:40

123,392

securebootai.dll

6.3.9600.21111

10-Jul-23

21:25

76,800

winsockai.dll

6.3.9600.21111

10-Jul-23

21:23

69,632

ws2_helper.dll

6.3.9600.21111

10-Jul-23

21:24

62,976

cleanupai.dll

6.3.9600.21111

10-Jul-23

21:23

33,792

wdscore.dll

6.3.9600.21111

10-Jul-23

21:24

276,480

CntrtextInstaller.dll

6.3.9600.21111

10-Jul-23

21:27

153,088

drvstore.dll

6.3.9600.21111

10-Jul-23

21:27

744,960

dpx.dll

6.3.9600.21111

10-Jul-23

21:16

345,088

msdelta.dll

6.3.9600.21111

10-Jul-23

21:25

499,712

mspatcha.dll

6.3.9600.21111

10-Jul-23

21:28

46,080

cmiv2.dll

6.3.9600.21111

10-Jul-23

21:58

3,300,352

cmiaisupport.dll

6.3.9600.21111

10-Jul-23

21:21

3,154,944

cmitrust.dll

6.3.9600.21111

10-Jul-23

21:24

418,304

WcmTypes.xsd

Not versioned

10-Jul-23

19:03

1,047

CbsMsg.dll

6.3.9600.21111

10-Jul-23

21:28

42,496

CbsCore.dll

6.3.9600.21111

10-Jul-23

21:17

1,606,656

TiWorker.exe

6.3.9600.21111

10-Jul-23

21:24

193,024

TiFileFetcher.exe

6.3.9600.21111

10-Jul-23

21:18

427,520

DrUpdate.dll

6.3.9600.21111

10-Jul-23

21:27

246,784

wrpint.dll

6.3.9600.21111

10-Jul-23

21:17

66,048

wcp.dll

6.3.9600.21111

10-Jul-23

21:26

2,854,912

cmiadapter.dll

6.3.9600.21111

10-Jul-23

21:22

139,264

smiengine.dll

6.3.9600.21111

10-Jul-23

21:11

922,624

smipi.dll

6.3.9600.21111

10-Jul-23

21:24

65,536

poqexec.exe

6.3.9600.21111

10-Jul-23

22:10

146,432

amd64_installed

Not versioned

10-Jul-23

18:54

9

bfsvc.dll

6.3.9600.21111

10-Jul-23

21:20

77,312

timezoneai.dll

6.3.9600.21111

10-Jul-23

21:26

101,888

GlobalInstallOrder.xml

Not versioned

10-Jul-23

19:04

1,249,919

luainstall.dll

6.3.9600.21111

10-Jul-23

21:24

53,248

fveupdateai.dll

6.3.9600.21111

10-Jul-23

21:23

61,952

ExtendedSecurityUpdatesAI.dll

6.3.9600.21111

10-Jul-23

21:54

195,584

mofinstall.dll

6.3.9600.21111

10-Jul-23

21:24

67,072

esscli.dll

6.3.9600.21111

10-Jul-23

21:23

388,608

mofd.dll

6.3.9600.21111

10-Jul-23

21:22

248,320

repdrvfs.dll

6.3.9600.21111

10-Jul-23

21:23

350,720

fastprox.dll

6.3.9600.21111

10-Jul-23

21:22

854,016

wbemcomn.dll

6.3.9600.21111

10-Jul-23

21:24

453,632

wbemcore.dll

6.3.9600.21111

10-Jul-23

21:22

1,148,928

wmiutils.dll

6.3.9600.21111

10-Jul-23

21:24

111,104

wbemprox.dll

6.3.9600.21111

10-Jul-23

21:23

35,840

wmicmiplugin.dll

6.3.9600.21111

10-Jul-23

21:17

508,928

sppinst.dll

6.3.9600.21111

10-Jul-23

21:17

769,024

cmifw.dll

6.3.9600.21111

10-Jul-23

21:22

97,280

FirewallOfflineAPI.dll

6.3.9600.21111

10-Jul-23

21:27

166,912

NetSetupAI.dll

6.3.9600.21111

10-Jul-23

21:25

65,024

NetSetupApi.dll

6.3.9600.21111

10-Jul-23

21:27

184,832

httpai.dll

6.3.9600.21111

10-Jul-23

21:02

55,296

peerdistai.dll

6.3.9600.21111

10-Jul-23

21:02

65,024

PrintAdvancedInstaller.dll

6.3.9600.21111

10-Jul-23

21:12

99,328

msdtcadvancedinstaller.dll

6.3.9600.21111

10-Jul-23

21:02

215,040

netfxconfig.dll

6.3.9600.21111

10-Jul-23

21:25

40,448

ConfigureIEOptionalComponentsAI.dll

6.3.9600.21111

10-Jul-23

21:02

76,800

IEFileInstallAI.dll

6.3.9600.21111

10-Jul-23

20:59

66,560

servicemodelregai.dll

6.3.9600.21111

10-Jul-23

21:02

96,768

SetIEInstalledDateAI.dll

6.3.9600.21111

10-Jul-23

21:02

49,152

ceipfwdai.dll

6.3.9600.21111

10-Jul-23

20:59

197,632

bcdeditai.dll

6.3.9600.21111

10-Jul-23

21:04

271,360

appxreg.dll

6.3.9600.21111

10-Jul-23

21:20

19,968

RegisterIEPKeysAI.dll

6.3.9600.21111

10-Jul-23

21:01

23,040

cmipnpinstall.dll

6.3.9600.21111

10-Jul-23

21:24

195,072

securebootai.dll

6.3.9600.21111

10-Jul-23

21:04

70,656

winsockai.dll

6.3.9600.21111

10-Jul-23

21:02

71,680

ws2_helper.dll

6.3.9600.21111

10-Jul-23

21:03

50,176

cleanupai.dll

6.3.9600.21111

10-Jul-23

21:02

37,376

wdscore.dll

6.3.9600.21111

10-Jul-23

21:03

208,384

CntrtextInstaller.dll

6.3.9600.21111

10-Jul-23

21:05

128,000

drvstore.dll

6.3.9600.21111

10-Jul-23

21:05

610,304

dpx.dll

6.3.9600.21111

10-Jul-23

20:59

265,216

msdelta.dll

6.3.9600.21111

10-Jul-23

21:03

398,336

mspatcha.dll

6.3.9600.21111

10-Jul-23

21:05

36,864

cmiv2.dll

6.3.9600.21111

10-Jul-23

21:25

2,257,408

cmiaisupport.dll

6.3.9600.21111

10-Jul-23

21:01

2,162,688

cmitrust.dll

6.3.9600.21111

10-Jul-23

21:03

286,720

WcmTypes.xsd

Not versioned

30-Jun-23

19:09

1,047

CbsMsg.dll

6.3.9600.21111

10-Jul-23

21:05

41,984

CbsCore.dll

6.3.9600.21111

10-Jul-23

20:59

1,379,328

TiWorker.exe

6.3.9600.21111

10-Jul-23

21:03

190,464

TiFileFetcher.exe

6.3.9600.21111

10-Jul-23

20:59

355,328

DrUpdate.dll

6.3.9600.21111

10-Jul-23

21:04

202,240

wrpint.dll

6.3.9600.21111

10-Jul-23

20:59

56,320

wcp.dll

6.3.9600.21111

10-Jul-23

21:05

2,408,448

cmiadapter.dll

6.3.9600.21111

10-Jul-23

21:02

121,856

smiengine.dll

6.3.9600.21111

10-Jul-23

20:55

750,080

smipi.dll

6.3.9600.21111

10-Jul-23

21:02

59,904

poqexec.exe

6.3.9600.21111

10-Jul-23

21:35

129,536

x86_installed

Not versioned

30-Jun-23

19:06

9

bfsvc.dll

6.3.9600.21111

10-Jul-23

21:00

74,752

timezoneai.dll

6.3.9600.21111

10-Jul-23

21:04

86,528

GlobalInstallOrder.xml

Not versioned

30-Jun-23

19:09

1,249,919

luainstall.dll

6.3.9600.21111

10-Jul-23

21:03

43,008

fveupdateai.dll

6.3.9600.21111

10-Jul-23

21:02

57,344

ExtendedSecurityUpdatesAI.dll

6.3.9600.21111

10-Jul-23

21:22

158,720

mofinstall.dll

6.3.9600.21111

10-Jul-23

21:03

64,000

esscli.dll

6.3.9600.21111

10-Jul-23

21:02

293,376

mofd.dll

6.3.9600.21111

10-Jul-23

21:02

204,800

repdrvfs.dll

6.3.9600.21111

10-Jul-23

21:02

277,504

fastprox.dll

6.3.9600.21111

10-Jul-23

21:02

670,208

wbemcomn.dll

6.3.9600.21111

10-Jul-23

21:03

386,048

wbemcore.dll

6.3.9600.21111

10-Jul-23

21:01

925,696

wmiutils.dll

6.3.9600.21111

10-Jul-23

21:03

90,624

wbemprox.dll

6.3.9600.21111

10-Jul-23

21:02

29,696

wmicmiplugin.dll

6.3.9600.21111

10-Jul-23

20:59

392,704

sppinst.dll

6.3.9600.21111

10-Jul-23

20:58

646,656

cmifw.dll

6.3.9600.21111

10-Jul-23

21:01

80,896

FirewallOfflineAPI.dll

6.3.9600.21111

10-Jul-23

21:04

140,800

NetSetupAI.dll

6.3.9600.21111

10-Jul-23

21:03

55,296

NetSetupApi.dll

6.3.9600.21111

10-Jul-23

21:04

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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