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HistoryMar 03, 2021 - 12:00 a.m.

KB5001399: Servicing stack update for Windows 10: April 13, 2021

2021-03-0300:00:00
Microsoft
support.microsoft.com
14

6.8 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

9.4%

KB5001399: Servicing stack update for Windows 10: April 13, 2021

This update applies to the following:

  • ​Windows 10 for 32-bit devices
  • Windows 10 for x64-based devices

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.This update also addresses an issue that might prevent the CVE-2020-0689 update from installing. The error message in the CBS.log file is TRUST_E_NOSIGNATURE. To learn more about this security vulnerability, see CVE-2020-0689 | Microsoft Secure Boot Security Feature Bypass Vulnerability.

How to get this update

Method 1: Windows UpdateThis update is available through Windows Update. It will be downloaded and installed automatically. Method 2: Microsoft Update CatalogTo get the stand-alone package for this update, go to the Microsoft Update Catalog website.Method 3: Windows Server Update ServicesThis update is also available through Windows Server Update Services (WSUS).PrerequisitesThere are no prerequisites to apply this update.Restart informationYou don’t have to restart your computer after you apply this update.Removal informationServicing stack updates (SSUs) make changes to how updates are installed and cannot be uninstalled from the device.Update replacement informationThis update replaces the previously released update KB5001079.

File Information

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

__

For all supported x86-based versions

File name File version Date Time File size
NetworkBindingEngineTransformer.dll 10.0.10240.18900 8-Mar-2021 22:10 201,216
NetSetupApi.dll 10.0.10240.16719 8-Feb-2016 18:45 78,176
peerdistai.dll 10.0.10240.18900 8-Mar-2021 20:52 24,064
PrintAdvancedInstaller.dll 10.0.10240.18900 8-Mar-2021 20:52 84,992
msdtcadvancedinstaller.dll 10.0.10240.18900 8-Mar-2021 20:52 47,104
netfxconfig.dll 10.0.10240.18900 8-Mar-2021 20:52 18,944
ConfigureIEOptionalComponentsAI.dll 10.0.10240.18900 8-Mar-2021 20:52 38,400
IEFileInstallAI.dll 10.0.10240.18900 8-Mar-2021 20:49 27,136
servicemodelregai.dll 10.0.10240.18900 8-Mar-2021 20:52 64,512
SetIEInstalledDateAI.dll 10.0.10240.18900 8-Mar-2021 20:52 14,336
bcdeditai.dll 10.0.10240.18900 8-Mar-2021 20:54 259,584
RegisterIEPKeysAI.dll 10.0.10240.18900 8-Mar-2021 20:52 13,824
cmipnpinstall.dll 10.0.10240.18900 8-Mar-2021 22:35 193,304
FeatureSettingsOverride.dll 10.0.10240.18900 8-Mar-2021 21:53 25,088
PrimitiveTransformers.dll 10.0.10240.18900 8-Mar-2021 20:55 43,008
WpnDataTransformer.dll 10.0.10240.18900 8-Mar-2021 20:49 20,992
AriTransformer.dll 10.0.10240.18900 8-Mar-2021 20:49 37,376
mqcmiplugin.dll 10.0.10240.18900 8-Mar-2021 21:44 122,880
EventsInstaller.dll 10.0.10240.18900 8-Mar-2021 21:03 166,912
mofinstall.dll 10.0.10240.18900 8-Mar-2021 20:41 63,488
esscli.dll 10.0.10240.17831 23-Mar-2018 21:36 299,008
mofd.dll 10.0.10240.18900 8-Mar-2021 20:41 203,264
repdrvfs.dll 10.0.10240.17831 23-Mar-2018 21:36 277,504
fastprox.dll 10.0.10240.17831 23-Mar-2018 21:36 669,696
wbemcomn.dll 10.0.10240.18210 8-Apr-2019 22:21 385,536
wbemcore.dll 10.0.10240.18602 14-May-2020 20:57 922,112
wmiutils.dll 10.0.10240.17831 23-Mar-2018 21:36 91,136
wbemprox.dll 10.0.10240.17831 23-Mar-2018 21:36 30,208
wmicmiplugin.dll 10.0.10240.18900 8-Mar-2021 20:41 272,384
httpai.dll 10.0.10240.18900 8-Mar-2021 20:39 16,896
securebootai.dll 10.0.10240.18900 8-Mar-2021 20:39 22,016
winsockai.dll 10.0.10240.18900 8-Mar-2021 20:39 65,536
ws2_helper.dll 10.0.10240.16384 9-Jul-2015 20:23 69,632
cleanupai.dll 10.0.10240.18900 8-Mar-2021 20:39 12,800
CntrtextInstaller.dll 10.0.10240.18900 8-Mar-2021 20:39 128,000
cmitrust.dll 10.0.10240.18900 8-Mar-2021 22:35 288,536
bfsvc.dll 10.0.10240.18900 8-Mar-2021 20:39 57,344
timezoneai.dll 10.0.10240.18900 8-Mar-2021 20:39 51,200
luainstall.dll 10.0.10240.18900 8-Mar-2021 20:39 42,496
fveupdateai.dll 10.0.10240.18900 8-Mar-2021 20:39 18,944
appxprovisionpackage.dll 10.0.10240.18900 8-Mar-2021 20:49 63,488
grouptrusteeai.dll 10.0.10240.18900 8-Mar-2021 22:50 38,160
appxreg.dll 10.0.10240.18900 8-Mar-2021 20:39 24,064
sppinst.dll 10.0.10240.18512 12-Feb-2020 20:04 647,168
offlinelsa.dll 10.0.10240.16384 9-Jul-2015 20:29 100,864
offlinesam.dll 10.0.10240.16384 9-Jul-2015 20:29 110,080
cmifw.dll 10.0.10240.18900 8-Mar-2021 21:37 80,896
FirewallOfflineAPI.dll 10.0.10240.17831 23-Mar-2018 22:30 147,968
NetSetupAI.dll 10.0.10240.18900 8-Mar-2021 21:31 79,360
NetSetupEngine.dll 10.0.10240.18512 12-Feb-2020 22:09 468,728
ImplatSetup.dll 10.0.10240.17020 21-Jun-2016 3:45 54,784
wdscore.dll 10.0.10240.17831 23-Mar-2018 23:38 207,192
drvstore.dll 10.0.10240.18512 12-Feb-2020 21:59 700,152
dpx.dll 10.0.10240.17831 23-Mar-2018 21:43 372,224
msdelta.dll 10.0.10240.17831 23-Mar-2018 21:35 410,624
mspatcha.dll 10.0.10240.17831 23-Mar-2018 21:43 36,864
cmiaisupport.dll 10.0.10240.18900 8-Mar-2021 22:34 2,168,568
WcmTypes.xsd Not versioned 27-Mar-2015 14:48 1,047
CbsMsg.dll 10.0.10240.16384 9-Jul-2015 21:40 49,504
CbsCore.dll 10.0.10240.18900 8-Mar-2021 22:18 1,777,664
TiWorker.exe 10.0.10240.17831 23-Mar-2018 21:42 197,120
TiFileFetcher.exe 10.0.10240.18512 12-Feb-2020 21:59 233,208
DrUpdate.dll 10.0.10240.18900 8-Mar-2021 22:34 283,384
wrpint.dll 10.0.10240.17831 23-Mar-2018 21:49 55,808
wcp.dll 10.0.10240.18900 8-Mar-2021 22:19 2,717,184
cmiadapter.dll 10.0.10240.18900 8-Mar-2021 20:39 64,512
smiengine.dll 10.0.10240.18900 8-Mar-2021 20:53 730,112
smipi.dll 10.0.10240.17831 23-Mar-2018 21:48 23,552
poqexec.exe 10.0.10240.16384 9-Jul-2015 20:25 118,272
x86_installed Not versioned 27-Mar-2015 14:35 9
GlobalInstallOrder.xml Not versioned 24-Apr-2015 17:17 1,249,165

__

For all supported x64-based versions

File name File version Date Time File size
NetworkBindingEngineTransformer.dll 10.0.10240.18900 8-Mar-2021 22:36 304,640
NetSetupApi.dll 10.0.10240.16719 8-Feb-2016 19:15 103,776
peerdistai.dll 10.0.10240.18900 8-Mar-2021 20:54 30,208
PrintAdvancedInstaller.dll 10.0.10240.18900 8-Mar-2021 20:54 98,304
msdtcadvancedinstaller.dll 10.0.10240.18900 8-Mar-2021 20:53 58,880
netfxconfig.dll 10.0.10240.18900 8-Mar-2021 20:53 22,528
ConfigureIEOptionalComponentsAI.dll 10.0.10240.18900 8-Mar-2021 20:53 46,592
IEFileInstallAI.dll 10.0.10240.18900 8-Mar-2021 20:49 29,184
servicemodelregai.dll 10.0.10240.18900 8-Mar-2021 20:53 80,896
SetIEInstalledDateAI.dll 10.0.10240.18900 8-Mar-2021 20:53 16,384
bcdeditai.dll 10.0.10240.18900 8-Mar-2021 20:55 283,648
RegisterIEPKeysAI.dll 10.0.10240.18900 8-Mar-2021 20:53 16,384
cmipnpinstall.dll 10.0.10240.18900 8-Mar-2021 23:11 245,496
FeatureSettingsOverride.dll 10.0.10240.18900 8-Mar-2021 22:17 31,744
PrimitiveTransformers.dll 10.0.10240.18900 8-Mar-2021 22:19 58,368
WpnDataTransformer.dll 10.0.10240.18900 8-Mar-2021 22:15 27,648
AriTransformer.dll 10.0.10240.18900 8-Mar-2021 22:15 50,688
mqcmiplugin.dll 10.0.10240.18900 8-Mar-2021 22:03 149,504
appserverai.dll 10.0.10240.18900 8-Mar-2021 22:02 109,056
RDWebAI.dll 10.0.10240.18900 8-Mar-2021 22:02 113,152
tssdisai.dll 10.0.10240.18900 8-Mar-2021 22:02 116,224
VmHostAI.dll 10.0.10240.18900 8-Mar-2021 22:02 93,696
EventsInstaller.dll 10.0.10240.18900 8-Mar-2021 22:29 214,016
mofinstall.dll 10.0.10240.18900 8-Mar-2021 21:09 67,584
esscli.dll 10.0.10240.17831 23-Mar-2018 22:09 402,432
mofd.dll 10.0.10240.18900 8-Mar-2021 21:09 248,320
repdrvfs.dll 10.0.10240.17831 23-Mar-2018 22:09 350,208
fastprox.dll 10.0.10240.17831 23-Mar-2018 22:11 854,528
wbemcomn.dll 10.0.10240.17831 23-Mar-2018 22:09 449,024
wbemcore.dll 10.0.10240.18602 14-May-2020 21:29 1,147,392
wmiutils.dll 10.0.10240.17831 23-Mar-2018 22:10 112,128
wbemprox.dll 10.0.10240.17831 23-Mar-2018 22:11 36,864
wmicmiplugin.dll 10.0.10240.18900 8-Mar-2021 21:07 341,504
httpai.dll 10.0.10240.18900 8-Mar-2021 20:54 19,968
securebootai.dll 10.0.10240.18900 8-Mar-2021 20:50 26,112
winsockai.dll 10.0.10240.18900 8-Mar-2021 20:53 73,216
ws2_helper.dll 10.0.10240.16384 9-Jul-2015 20:15 83,456
cleanupai.dll 10.0.10240.18900 8-Mar-2021 20:53 15,360
CntrtextInstaller.dll 10.0.10240.18900 8-Mar-2021 20:52 153,600
cmitrust.dll 10.0.10240.18900 8-Mar-2021 23:11 422,160
bfsvc.dll 10.0.10240.18900 8-Mar-2021 20:49 67,072
timezoneai.dll 10.0.10240.18900 8-Mar-2021 20:56 67,584
luainstall.dll 10.0.10240.18900 8-Mar-2021 20:47 52,736
fveupdateai.dll 10.0.10240.18900 8-Mar-2021 20:49 24,064
appxprovisionpackage.dll 10.0.10240.18900 8-Mar-2021 22:15 74,752
grouptrusteeai.dll 10.0.10240.18900 8-Mar-2021 23:25 43,768
appxreg.dll 10.0.10240.18900 8-Mar-2021 20:45 30,208
sppinst.dll 10.0.10240.18512 12-Feb-2020 20:45 769,024
offlinelsa.dll 10.0.10240.16384 9-Jul-2015 20:33 114,688
offlinesam.dll 10.0.10240.16384 9-Jul-2015 20:33 137,728
cmifw.dll 10.0.10240.18900 8-Mar-2021 21:53 96,768
FirewallOfflineAPI.dll 10.0.10240.17831 23-Mar-2018 22:54 173,568
NetSetupAI.dll 10.0.10240.18900 8-Mar-2021 21:48 105,472
NetSetupEngine.dll 10.0.10240.18512 12-Feb-2020 22:52 660,216
ImplatSetup.dll 10.0.10240.17020 21-Jun-2016 0:01 78,848
wdscore.dll 10.0.10240.17831 24-Mar-2018 0:23 254,808
drvstore.dll 10.0.10240.18512 12-Feb-2020 22:43 850,168
dpx.dll 10.0.10240.17831 23-Mar-2018 21:47 499,200
msdelta.dll 10.0.10240.17831 23-Mar-2018 21:51 515,072
mspatcha.dll 10.0.10240.17831 23-Mar-2018 21:46 46,080
cmiaisupport.dll 10.0.10240.18900 8-Mar-2021 23:10 3,170,040
WcmTypes.xsd Not versioned 17-Jun-2015 18:16 1,047
CbsMsg.dll 10.0.10240.16384 9-Jul-2015 21:31 50,528
CbsCore.dll 10.0.10240.18900 8-Mar-2021 22:46 1,968,128
TiWorker.exe 10.0.10240.17831 23-Mar-2018 21:45 200,192
TiFileFetcher.exe 10.0.10240.18512 12-Feb-2020 22:43 275,920
DrUpdate.dll 10.0.10240.18900 8-Mar-2021 23:10 340,728
wrpint.dll 10.0.10240.17831 23-Mar-2018 21:55 66,560
wcp.dll 10.0.10240.18900 8-Mar-2021 22:47 3,229,696
cmiadapter.dll 10.0.10240.18900 8-Mar-2021 20:49 80,384
smiengine.dll 10.0.10240.18900 8-Mar-2021 20:54 898,048
smipi.dll 10.0.10240.16384 9-Jul-2015 20:15 29,184
poqexec.exe 10.0.10240.16384 9-Jul-2015 20:15 141,824
amd64_installed Not versioned 17-Jun-2015 18:05 9
GlobalInstallOrder.xml Not versioned 17-Jun-2015 18:17 1,249,165
NetworkBindingEngineTransformer.dll 10.0.10240.18900 8-Mar-2021 22:10 201,216
NetSetupApi.dll 10.0.10240.16719 8-Feb-2016 18:45 78,176
peerdistai.dll 10.0.10240.18900 8-Mar-2021 20:52 24,064
PrintAdvancedInstaller.dll 10.0.10240.18900 8-Mar-2021 20:52 84,992
msdtcadvancedinstaller.dll 10.0.10240.18900 8-Mar-2021 20:52 47,104
netfxconfig.dll 10.0.10240.18900 8-Mar-2021 20:52 18,944
ConfigureIEOptionalComponentsAI.dll 10.0.10240.18900 8-Mar-2021 20:52 38,400
IEFileInstallAI.dll 10.0.10240.18900 8-Mar-2021 20:49 27,136
servicemodelregai.dll 10.0.10240.18900 8-Mar-2021 20:52 64,512
SetIEInstalledDateAI.dll 10.0.10240.18900 8-Mar-2021 20:52 14,336
bcdeditai.dll 10.0.10240.18900 8-Mar-2021 20:54 259,584
RegisterIEPKeysAI.dll 10.0.10240.18900 8-Mar-2021 20:52 13,824
cmipnpinstall.dll 10.0.10240.18900 8-Mar-2021 22:35 193,304
FeatureSettingsOverride.dll 10.0.10240.18900 8-Mar-2021 21:53 25,088
PrimitiveTransformers.dll 10.0.10240.18900 8-Mar-2021 20:55 43,008
WpnDataTransformer.dll 10.0.10240.18900 8-Mar-2021 20:49 20,992
AriTransformer.dll 10.0.10240.18900 8-Mar-2021 20:49 37,376
appserverai.dll 10.0.10240.18900 8-Mar-2021 21:43 85,504
RDWebAI.dll 10.0.10240.18900 8-Mar-2021 21:43 95,232
tssdisai.dll 10.0.10240.18900 8-Mar-2021 21:43 94,208
VmHostAI.dll 10.0.10240.18900 8-Mar-2021 21:43 74,752
EventsInstaller.dll 10.0.10240.18900 8-Mar-2021 21:03 166,912
mofinstall.dll 10.0.10240.18900 8-Mar-2021 20:41 63,488
esscli.dll 10.0.10240.17831 23-Mar-2018 21:36 299,008
mofd.dll 10.0.10240.18900 8-Mar-2021 20:41 203,264
repdrvfs.dll 10.0.10240.17831 23-Mar-2018 21:36 277,504
fastprox.dll 10.0.10240.17831 23-Mar-2018 21:36 669,696
wbemcomn.dll 10.0.10240.18210 8-Apr-2019 22:21 385,536
wbemcore.dll 10.0.10240.18602 14-May-2020 20:57 922,112
wmiutils.dll 10.0.10240.17831 23-Mar-2018 21:36 91,136
wbemprox.dll 10.0.10240.17831 23-Mar-2018 21:36 30,208
wmicmiplugin.dll 10.0.10240.18900 8-Mar-2021 20:41 272,384
httpai.dll 10.0.10240.18900 8-Mar-2021 20:39 16,896
securebootai.dll 10.0.10240.18900 8-Mar-2021 20:39 22,016
winsockai.dll 10.0.10240.18900 8-Mar-2021 20:39 65,536
ws2_helper.dll 10.0.10240.16384 9-Jul-2015 20:23 69,632
cleanupai.dll 10.0.10240.18900 8-Mar-2021 20:39 12,800
CntrtextInstaller.dll 10.0.10240.18900 8-Mar-2021 20:39 128,000
cmitrust.dll 10.0.10240.18900 8-Mar-2021 22:35 288,536
bfsvc.dll 10.0.10240.18900 8-Mar-2021 20:39 57,344
timezoneai.dll 10.0.10240.18900 8-Mar-2021 20:39 51,200
luainstall.dll 10.0.10240.18900 8-Mar-2021 20:39 42,496
fveupdateai.dll 10.0.10240.18900 8-Mar-2021 20:39 18,944
appxprovisionpackage.dll 10.0.10240.18900 8-Mar-2021 20:49 63,488
grouptrusteeai.dll 10.0.10240.18900 8-Mar-2021 22:50 38,160
appxreg.dll 10.0.10240.18900 8-Mar-2021 20:39 24,064
sppinst.dll 10.0.10240.18512 12-Feb-2020 20:04 647,168
offlinelsa.dll 10.0.10240.16384 9-Jul-2015 20:29 100,864
offlinesam.dll 10.0.10240.16384 9-Jul-2015 20:29 110,080
cmifw.dll 10.0.10240.18900 8-Mar-2021 21:37 80,896
FirewallOfflineAPI.dll 10.0.10240.17831 23-Mar-2018 22:30 147,968
NetSetupAI.dll 10.0.10240.18900 8-Mar-2021 21:31 79,360
NetSetupEngine.dll 10.0.10240.18512 12-Feb-2020 22:09 468,728
ImplatSetup.dll 10.0.10240.17020 21-Jun-2016 3:45 54,784
wdscore.dll 10.0.10240.17831 23-Mar-2018 23:38 207,192
drvstore.dll 10.0.10240.18512 12-Feb-2020 21:59 700,152
dpx.dll 10.0.10240.17831 23-Mar-2018 21:43 372,224
msdelta.dll 10.0.10240.17831 23-Mar-2018 21:35 410,624
mspatcha.dll 10.0.10240.17831 23-Mar-2018 21:43 36,864
cmiaisupport.dll 10.0.10240.18900 8-Mar-2021 22:34 2,168,568
WcmTypes.xsd Not versioned 27-Mar-2015 14:48 1,047
CbsMsg.dll 10.0.10240.16384 9-Jul-2015 21:40 49,504
CbsCore.dll 10.0.10240.18900 8-Mar-2021 22:18 1,777,664
TiWorker.exe 10.0.10240.17831 23-Mar-2018 21:42 197,120
TiFileFetcher.exe 10.0.10240.18512 12-Feb-2020 21:59 233,208
DrUpdate.dll 10.0.10240.18900 8-Mar-2021 22:34 283,384
wrpint.dll 10.0.10240.17831 23-Mar-2018 21:49 55,808
wcp.dll 10.0.10240.18900 8-Mar-2021 22:19 2,717,184
cmiadapter.dll 10.0.10240.18900 8-Mar-2021 20:39 64,512
smiengine.dll 10.0.10240.18900 8-Mar-2021 20:53 730,112
smipi.dll 10.0.10240.17831 23-Mar-2018 21:48 23,552
poqexec.exe 10.0.10240.16384 9-Jul-2015 20:25 118,272
x86_installed Not versioned 27-Mar-2015 14:35 9
GlobalInstallOrder.xml Not versioned 24-Apr-2015 17:17 1,249,165

References

For information about SSUs, see the following articles:

6.8 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

9.4%