KB4601395: Servicing stack update for Windows 10, version 1909: February 9, 2021

This update applies to the following:

  • Windows 10, version 1909 for 32-bit systems

  • Windows 10, version 1909 for ARM64-based systems

  • Windows 10, version 1909 for x64-based systems

  • Windows Server, version 1909 (Server Core installation)

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 enables a single package design that incorporates the servicing stack update (SSU) into the latest cumulative update (LCU). Combining the SSU and LCU update into a single package provides a more seamless deployment and installation experience. For more information, see Simplifying the on-premises deployment and installation of servicing stack updates.

How to get this update

Method 1: Windows Update 

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

Method 2: Microsoft Update Catalog 

To get the stand-alone package for this update, go to the Microsoft Update Catalog website.

Method 3: Windows Server Update Services

This update is also available through Windows Server Update Services (WSUS).

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 KB4598479.

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

luainstall.dll

10.0.18362.1370

12-Jan-2021

0:19

55,112

appxreg.dll

10.0.18362.1370

12-Jan-2021

0:19

38,216

appxprovisionpackage.dll

10.0.18362.1370

12-Jan-2021

0:19

75,080

EventsInstaller.dll

10.0.18362.1370

12-Jan-2021

0:19

190,280

PerfCounterInstaller.dll

10.0.18362.1370

12-Jan-2021

0:19

120,136

grouptrusteeai.dll

10.0.18362.1370

12-Jan-2021

0:19

39,248

timezoneai.dll

10.0.18362.1370

12-Jan-2021

0:19

58,696

httpai.dll

10.0.18362.1370

12-Jan-2021

0:19

27,464

cmifw.dll

10.0.18362.1370

12-Jan-2021

0:19

85,832

FirewallOfflineAPI.dll

10.0.18362.1370

12-Jan-2021

0:19

171,336

NetSetupAI.dll

10.0.18362.1370

12-Jan-2021

0:19

121,160

NetSetupApi.dll

10.0.18362.1370

12-Jan-2021

0:19

107,848

NetSetupEngine.dll

10.0.18362.1370

12-Jan-2021

0:19

587,592

ImplatSetup.dll

10.0.18362.1370

12-Jan-2021

0:19

97,608

winsockai.dll

10.0.18362.1370

12-Jan-2021

0:19

76,104

ws2_helper.dll

10.0.18362.1370

12-Jan-2021

0:19

88,904

wmicmiplugin.dll

10.0.18362.1370

12-Jan-2021

0:19

312,136

netfxconfig.dll

10.0.18362.1370

12-Jan-2021

0:34

25,936

featurestagingai.dll

10.0.18362.1370

12-Jan-2021

0:34

52,560

offlinelsa.dll

10.0.18362.1370

12-Jan-2021

0:19

115,016

offlinesam.dll

10.0.18362.1370

12-Jan-2021

0:19

224,072

mofinstall.dll

10.0.18362.1370

12-Jan-2021

0:19

73,032

esscli.dll

10.0.18362.1370

12-Jan-2021

0:19

299,344

mofd.dll

10.0.18362.1370

12-Jan-2021

0:19

205,648

repdrvfs.dll

10.0.18362.1370

12-Jan-2021

0:19

280,392

fastprox.dll

10.0.18362.1370

12-Jan-2021

0:19

701,768

wbemcomn.dll

10.0.18362.1370

12-Jan-2021

0:19

395,592

wbemcore.dll

10.0.18362.1370

12-Jan-2021

0:19

1,449,808

wmiutils.dll

10.0.18362.1370

12-Jan-2021

0:19

97,616

wbemprox.dll

10.0.18362.1370

12-Jan-2021

0:19

37,192

shtransform.dll

10.0.18362.1370

12-Jan-2021

3:37

33,080

bfsvc.dll

10.0.18362.1370

12-Jan-2021

0:19

189,264

securebootai.dll

10.0.18362.1370

12-Jan-2021

0:19

29,008

fveupdateai.dll

10.0.18362.1370

12-Jan-2021

0:19

35,144

peerdistai.dll

10.0.18362.1370

12-Jan-2021

3:35

31,560

PrintAdvancedInstaller.dll

10.0.18362.1370

12-Jan-2021

3:36

91,464

msdtcadvancedinstaller.dll

10.0.18362.1370

12-Jan-2021

3:38

52,536

netfxconfig.dll

10.0.18362.1370

12-Jan-2021

0:34

25,936

ConfigureIEOptionalComponentsAI.dll

10.0.18362.1370

12-Jan-2021

3:35

45,384

IEFileInstallAI.dll

10.0.18362.1370

12-Jan-2021

3:35

33,104

servicemodelregai.dll

10.0.18362.1370

12-Jan-2021

3:35

72,528

SetIEInstalledDateAI.dll

10.0.18362.1370

12-Jan-2021

3:36

22,344

bcdeditai.dll

10.0.18362.1370

12-Jan-2021

0:32

291,640

FeatureSettingsOverride.dll

10.0.18362.1370

12-Jan-2021

3:35

34,120

SupplementalServicingAI.dll

10.0.18362.1370

12-Jan-2021

3:32

15,360

PrimitiveTransformers.dll

10.0.18362.1370

12-Jan-2021

0:19

48,456

sppinst.dll

10.0.18362.1370

12-Jan-2021

0:22

36,176

grouptrusteeai.dll

10.0.18362.1370

12-Jan-2021

0:19

39,248

AriTransformer.dll

10.0.18362.1370

12-Jan-2021

0:19

47,944

WpnDataTransformer.dll

10.0.18362.1370

12-Jan-2021

0:19

31,048

mqcmiplugin.dll

5.0.1.1

12-Jan-2021

3:39

127,312

appserverai.dll

10.0.18362.1370

12-Jan-2021

3:34

147,768

RDWebAI.dll

10.0.18362.1370

12-Jan-2021

3:34

102,200

tssdisai.dll

10.0.18362.1370

12-Jan-2021

3:35

104,776

VmHostAI.dll

10.0.18362.1370

12-Jan-2021

3:34

80,696

iissetupai.dll

10.0.18362.1370

12-Jan-2021

0:19

103,752

cleanupai.dll

10.0.18362.1370

12-Jan-2021

0:19

20,808

wdscore.dll

10.0.18362.1370

12-Jan-2021

0:19

201,032

drvstore.dll

10.0.18362.1370

12-Jan-2021

0:19

1,022,280

dpx.dll

5.0.1.1

12-Jan-2021

0:19

495,944

msdelta.dll

5.0.1.1

12-Jan-2021

0:19

434,504

mspatcha.dll

5.0.1.1

12-Jan-2021

0:19

44,360

cmiaisupport.dll

10.0.18362.1370

12-Jan-2021

0:19

1,656,648

WcmTypes.xsd

Not applicable

19-Nov-2020

17:26

1,047

CbsMsg.dll

10.0.18362.1370

12-Jan-2021

0:19

51,536

CbsCore.dll

10.0.18362.1370

12-Jan-2021

0:19

2,113,864

turbostack.dll

10.0.18362.1370

12-Jan-2021

0:19

433,992

TiWorker.exe

10.0.18362.1370

12-Jan-2021

0:00

237,568

TiFileFetcher.exe

10.0.18362.1370

12-Jan-2021

0:19

367,944

drupdate.dll

10.0.18362.1370

12-Jan-2021

0:19

311,112

wcp.dll

10.0.18362.1370

12-Jan-2021

0:19

3,093,320

cmiadapter.dll

10.0.18362.1370

12-Jan-2021

0:19

67,912

smiengine.dll

10.0.18362.1370

12-Jan-2021

0:19

702,288

smipi.dll

10.0.18362.1370

12-Jan-2021

0:19

31,560

poqexec.exe

10.0.18362.1370

12-Jan-2021

0:01

390,656

x86_installed

Not applicable

19-Nov-2020

17:22

9

GlobalInstallOrder.xml

Not applicable

19-Nov-2020

17:26

1,247,506

ReserveManager.dll

10.0.18362.1370

12-Jan-2021

0:34

198,992

wrpint.dll

10.0.18362.1370

12-Jan-2021

0:19

64,328

updateagent.dll

10.0.18362.1370

12-Jan-2021

0:19

2,030,920

File name

File version

Date

Time

File size

luainstall.dll

10.0.18362.1370

11-Jan-2021

22:07

68,920

appxreg.dll

10.0.18362.1370

11-Jan-2021

22:07

45,368

appxprovisionpackage.dll

10.0.18362.1370

11-Jan-2021

22:07

86,864

EventsInstaller.dll

10.0.18362.1370

11-Jan-2021

22:08

242,504

PerfCounterInstaller.dll

10.0.18362.1370

11-Jan-2021

22:07

141,136

grouptrusteeai.dll

10.0.18362.1370

11-Jan-2021

22:07

44,872

timezoneai.dll

10.0.18362.1370

11-Jan-2021

22:07

70,456

httpai.dll

10.0.18362.1370

11-Jan-2021

22:07

30,536

cmifw.dll

10.0.18362.1370

11-Jan-2021

22:07

103,752

FirewallOfflineAPI.dll

10.0.18362.1370

11-Jan-2021

22:04

199,992

NetSetupAI.dll

10.0.18362.1370

11-Jan-2021

22:08

165,192

NetSetupApi.dll

10.0.18362.1370

11-Jan-2021

22:04

143,184

NetSetupEngine.dll

10.0.18362.1370

11-Jan-2021

22:05

825,144

ImplatSetup.dll

10.0.18362.1370

11-Jan-2021

22:07

133,960

winsockai.dll

10.0.18362.1370

11-Jan-2021

22:07

82,744

ws2_helper.dll

10.0.18362.1370

11-Jan-2021

22:08

106,832

wmicmiplugin.dll

10.0.18362.1370

11-Jan-2021

22:08

458,056

netfxconfig.dll

10.0.18362.1370

11-Jan-2021

22:17

29,512

featurestagingai.dll

10.0.18362.1370

11-Jan-2021

22:17

65,872

offlinelsa.dll

10.0.18362.1370

11-Jan-2021

22:06

132,432

offlinesam.dll

10.0.18362.1370

11-Jan-2021

22:06

254,800

mofinstall.dll

10.0.18362.1370

11-Jan-2021

22:08

76,624

esscli.dll

10.0.18362.1370

11-Jan-2021

22:08

402,768

mofd.dll

10.0.18362.1370

11-Jan-2021

22:08

258,872

repdrvfs.dll

10.0.18362.1370

11-Jan-2021

22:08

362,320

fastprox.dll

10.0.18362.1370

11-Jan-2021

22:08

907,600

wbemcomn.dll

10.0.18362.1370

11-Jan-2021

22:08

463,696

wbemcore.dll

10.0.18362.1370

11-Jan-2021

22:08

1,699,152

wmiutils.dll

10.0.18362.1370

11-Jan-2021

22:08

119,632

wbemprox.dll

10.0.18362.1370

11-Jan-2021

22:08

43,856

shtransform.dll

10.0.18362.1370

12-Jan-2021

1:57

39,736

bfsvc.dll

10.0.18362.1370

11-Jan-2021

22:08

223,056

securebootai.dll

10.0.18362.1370

11-Jan-2021

22:08

34,104

fveupdateai.dll

10.0.18362.1370

11-Jan-2021

22:08

39,760

peerdistai.dll

10.0.18362.1370

12-Jan-2021

1:55

37,704

PrintAdvancedInstaller.dll

10.0.18362.1370

12-Jan-2021

1:54

105,272

msdtcadvancedinstaller.dll

10.0.18362.1370

12-Jan-2021

1:54

61,768

netfxconfig.dll

10.0.18362.1370

11-Jan-2021

22:17

29,512

ConfigureIEOptionalComponentsAI.dll

10.0.18362.1370

12-Jan-2021

1:54

51,528

IEFileInstallAI.dll

10.0.18362.1370

12-Jan-2021

1:54

37,192

servicemodelregai.dll

10.0.18362.1370

12-Jan-2021

1:55

90,952

SetIEInstalledDateAI.dll

10.0.18362.1370

12-Jan-2021

1:54

24,904

bcdeditai.dll

10.0.18362.1370

11-Jan-2021

22:15

318,288

FeatureSettingsOverride.dll

10.0.18362.1370

12-Jan-2021

1:54

39,736

SupplementalServicingAI.dll

10.0.18362.1370

12-Jan-2021

1:51

18,944

PrimitiveTransformers.dll

10.0.18362.1370

11-Jan-2021

22:05

62,288

sppinst.dll

10.0.18362.1370

11-Jan-2021

22:08

43,344

grouptrusteeai.dll

10.0.18362.1370

11-Jan-2021

22:07

44,872

AriTransformer.dll

10.0.18362.1370

11-Jan-2021

22:08

56,648

WpnDataTransformer.dll

10.0.18362.1370

11-Jan-2021

22:07

37,704

mqcmiplugin.dll

5.0.1.1

12-Jan-2021

2:00

155,984

appserverai.dll

10.0.18362.1370

12-Jan-2021

1:55

170,312

RDWebAI.dll

10.0.18362.1370

12-Jan-2021

1:56

119,632

tssdisai.dll

10.0.18362.1370

12-Jan-2021

1:56

126,288

VmHostAI.dll

10.0.18362.1370

12-Jan-2021

1:56

98,640

iissetupai.dll

10.0.18362.1370

11-Jan-2021

22:08

127,312

cleanupai.dll

10.0.18362.1370

11-Jan-2021

22:08

23,376

wdscore.dll

10.0.18362.1370

11-Jan-2021

22:05

247,632

drvstore.dll

10.0.18362.1370

11-Jan-2021

22:05

1,285,456

dpx.dll

5.0.1.1

11-Jan-2021

22:05

717,624

msdelta.dll

5.0.1.1

11-Jan-2021

22:05

548,176

mspatcha.dll

5.0.1.1

11-Jan-2021

22:05

55,096

cmiaisupport.dll

10.0.18362.1370

11-Jan-2021

22:05

2,538,808

WcmTypes.xsd

 Not applicable

14-Dec-2020

18:19

1,047

CbsMsg.dll

10.0.18362.1370

11-Jan-2021

22:05

53,584

CbsCore.dll

10.0.18362.1370

11-Jan-2021

22:05

2,536,760

turbostack.dll

10.0.18362.1370

11-Jan-2021

22:05

600,912

TiWorker.exe

10.0.18362.1370

11-Jan-2021

21:44

253,952

TiFileFetcher.exe

10.0.18362.1370

11-Jan-2021

22:05

462,160

drupdate.dll

10.0.18362.1370

11-Jan-2021

22:05

377,672

wcp.dll

10.0.18362.1370

11-Jan-2021

22:05

4,058,448

cmiadapter.dll

10.0.18362.1370

11-Jan-2021

22:05

82,256

smiengine.dll

10.0.18362.1370

11-Jan-2021

22:04

858,424

smipi.dll

10.0.18362.1370

11-Jan-2021

22:06

36,688

poqexec.exe

10.0.18362.1370

11-Jan-2021

21:40

492,544

amd64_installed

14-Dec-2020

18:15

9

GlobalInstallOrder.xml

 Not applicable

14-Dec-2020

18:19

1,247,506

ReserveManager.dll

10.0.18362.1370

11-Jan-2021

22:17

248,144

wrpint.dll

10.0.18362.1370

11-Jan-2021

22:05

75,064

updateagent.dll

10.0.18362.1370

11-Jan-2021

22:05

2,727,248

luainstall.dll

10.0.18362.1370

11-Jan-2021

22:01

55,120

appxreg.dll

10.0.18362.1370

11-Jan-2021

22:01

38,224

appxprovisionpackage.dll

10.0.18362.1370

11-Jan-2021

22:01

75,088

EventsInstaller.dll

10.0.18362.1370

11-Jan-2021

22:01

190,288

PerfCounterInstaller.dll

10.0.18362.1370

11-Jan-2021

22:01

120,120

grouptrusteeai.dll

10.0.18362.1370

11-Jan-2021

22:02

39,224

timezoneai.dll

10.0.18362.1370

11-Jan-2021

22:01

58,704

httpai.dll

10.0.18362.1370

11-Jan-2021

22:01

27,472

cmifw.dll

10.0.18362.1370

11-Jan-2021

22:03

85,832

FirewallOfflineAPI.dll

10.0.18362.1370

11-Jan-2021

22:01

171,344

NetSetupAI.dll

10.0.18362.1370

11-Jan-2021

22:02

121,144

NetSetupApi.dll

10.0.18362.1370

11-Jan-2021

22:01

107,832

NetSetupEngine.dll

10.0.18362.1370

11-Jan-2021

22:01

587,600

ImplatSetup.dll

10.0.18362.1370

11-Jan-2021

22:01

97,592

winsockai.dll

10.0.18362.1370

11-Jan-2021

22:01

76,112

ws2_helper.dll

10.0.18362.1370

11-Jan-2021

22:01

88,912

wmicmiplugin.dll

10.0.18362.1370

11-Jan-2021

22:01

312,144

netfxconfig.dll

10.0.18362.1370

11-Jan-2021

22:17

25,936

featurestagingai.dll

10.0.18362.1370

11-Jan-2021

22:17

52,560

offlinelsa.dll

10.0.18362.1370

11-Jan-2021

22:01

115,024

offlinesam.dll

10.0.18362.1370

11-Jan-2021

22:02

224,056

mofinstall.dll

10.0.18362.1370

11-Jan-2021

22:01

73,040

esscli.dll

10.0.18362.1370

11-Jan-2021

22:01

299,344

mofd.dll

10.0.18362.1370

11-Jan-2021

22:01

205,648

repdrvfs.dll

10.0.18362.1370

11-Jan-2021

22:02

280,376

fastprox.dll

10.0.18362.1370

11-Jan-2021

22:02

701,752

wbemcomn.dll

10.0.18362.1370

11-Jan-2021

22:02

395,576

wbemcore.dll

10.0.18362.1370

11-Jan-2021

22:02

1,449,784

wmiutils.dll

10.0.18362.1370

11-Jan-2021

22:01

97,616

wbemprox.dll

10.0.18362.1370

11-Jan-2021

22:01

37,200

shtransform.dll

10.0.18362.1370

12-Jan-2021

0:56

33,104

bfsvc.dll

10.0.18362.1370

11-Jan-2021

22:01

189,264

securebootai.dll

10.0.18362.1370

11-Jan-2021

22:02

29,008

fveupdateai.dll

10.0.18362.1370

11-Jan-2021

22:01

35,152

peerdistai.dll

10.0.18362.1370

12-Jan-2021

0:56

31,544

PrintAdvancedInstaller.dll

10.0.18362.1370

12-Jan-2021

0:56

91,448

msdtcadvancedinstaller.dll

10.0.18362.1370

12-Jan-2021

0:56

52,560

netfxconfig.dll

10.0.18362.1370

11-Jan-2021

22:17

25,936

ConfigureIEOptionalComponentsAI.dll

10.0.18362.1370

12-Jan-2021

0:56

45,392

IEFileInstallAI.dll

10.0.18362.1370

12-Jan-2021

0:56

33,080

servicemodelregai.dll

10.0.18362.1370

12-Jan-2021

0:56

72,504

SetIEInstalledDateAI.dll

10.0.18362.1370

12-Jan-2021

0:56

22,328

bcdeditai.dll

10.0.18362.1370

11-Jan-2021

22:14

291,656

FeatureSettingsOverride.dll

10.0.18362.1370

12-Jan-2021

0:56

34,104

SupplementalServicingAI.dll

10.0.18362.1370

12-Jan-2021

0:54

15,360

PrimitiveTransformers.dll

10.0.18362.1370

11-Jan-2021

22:02

48,440

sppinst.dll

10.0.18362.1370

11-Jan-2021

22:05

36,152

grouptrusteeai.dll

10.0.18362.1370

11-Jan-2021

22:02

39,224

AriTransformer.dll

10.0.18362.1370

11-Jan-2021

22:01

47,928

WpnDataTransformer.dll

10.0.18362.1370

11-Jan-2021

22:01

31,056

appserverai.dll

10.0.18362.1370

12-Jan-2021

0:56

147,792

RDWebAI.dll

10.0.18362.1370

12-Jan-2021

0:55

102,224

tssdisai.dll

10.0.18362.1370

12-Jan-2021

0:56

104,784

VmHostAI.dll

10.0.18362.1370

12-Jan-2021

0:55

80,720

iissetupai.dll

10.0.18362.1370

11-Jan-2021

22:01

103,760

cleanupai.dll

10.0.18362.1370

11-Jan-2021

22:01

20,816

wdscore.dll

10.0.18362.1370

11-Jan-2021

22:02

201,016

drvstore.dll

10.0.18362.1370

11-Jan-2021

22:02

1,022,280

dpx.dll

5.0.1.1

11-Jan-2021

22:01

495,952

msdelta.dll

5.0.1.1

11-Jan-2021

22:01

434,512

mspatcha.dll

5.0.1.1

11-Jan-2021

22:01

44,344

cmiaisupport.dll

10.0.18362.1370

11-Jan-2021

22:01

1,656,656

WcmTypes.xsd

 Not applicable

30-Dec-2020

20:30

1,047

CbsMsg.dll

10.0.18362.1370

11-Jan-2021

22:02

51,512

CbsCore.dll

10.0.18362.1370

11-Jan-2021

22:01

2,113,872

turbostack.dll

10.0.18362.1370

11-Jan-2021

22:01

434,000

TiWorker.exe

10.0.18362.1370

11-Jan-2021

21:42

237,568

TiFileFetcher.exe

10.0.18362.1370

11-Jan-2021

22:02

367,928

drupdate.dll

10.0.18362.1370

11-Jan-2021

22:01

311,120

wcp.dll

10.0.18362.1370

11-Jan-2021

22:01

3,093,304

cmiadapter.dll

10.0.18362.1370

11-Jan-2021

22:01

67,920

smiengine.dll

10.0.18362.1370

11-Jan-2021

22:01

702,264

smipi.dll

10.0.18362.1370

11-Jan-2021

22:01

31,568

poqexec.exe

10.0.18362.1370

11-Jan-2021

21:44

390,656

x86_installed

 Not applicable

30-Dec-2020

20:26

9

GlobalInstallOrder.xml

 Not applicable

30-Dec-2020

20:30

1,247,506

ReserveManager.dll

10.0.18362.1370

11-Jan-2021

22:17

198,992

wrpint.dll

10.0.18362.1370

11-Jan-2021

22:02

64,312

updateagent.dll

10.0.18362.1370

11-Jan-2021

22:01

2,030,928

References

For information about SSUs, see the following articles:

For more information about Dynamic Updates, see the following articles:

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

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