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This update makes quality improvements to the servicing stack, which is the component that installs Windows updates.
We strongly recommend you install the latest servicing stack update (SSU) for your operating system before installing the latest cumulative update (LCU). Installing servicing stack updates (SSU) makes sure that you have a robust and reliable servicing stack so that your devices can receive and install Microsoft security fixes.
This update is available through Windows Update. It will be downloaded and installed automatically.
To get the stand-alone package for this update, go to the Microsoft Update Catalog website.
This update is also available through Windows Server Update Services (WSUS).
There are no prerequisites to apply this update.
You don't have to restart your computer after you apply this update.
This update replaces the previously released update KB 4521857.
| File name | SHA1 hash | SHA256 hash |
|---|---|---|
| Windows8-RT-KB4523208-x64.msu | 8EC1A4D459CFAB6330B8616F7F298ECB5A0E1665 | 0ED14A9E91C04D5C5E61270C74A12D58AFFA24576AD25E23960DCFCE5D15F5AD |
The English (United States) version of this software update installs files that have the attributes that are listed in the following tables.
Windows Server 2012 file information
The MANIFEST files (.manifest) and MUM files (.mum) that are installed are not listed.
| File name | File version | File size | Date | Time | Platform |
| Cbsapi.dll | 6.2.9200.16384 | 23,040 | 26-Jul-2012 | 03:05 | x64 |
| Esscli.dll | 6.2.9200.22865 | 385,024 | 17-Aug-2019 | 17:10 | x64 |
| Fastprox.dll | 6.2.9200.22865 | 816,640 | 17-Aug-2019 | 17:10 | x64 |
| Mofd.dll | 6.2.9200.22865 | 258,048 | 17-Aug-2019 | 17:10 | x64 |
| Mofinstall.dll | 6.2.9200.16384 | 71,168 | 26-Jul-2012 | 03:07 | x64 |
| Repdrvfs.dll | 6.2.9200.16384 | 366,080 | 26-Jul-2012 | 03:07 | x64 |
| Wbemcomn.dll | 6.2.9200.22865 | 462,336 | 17-Aug-2019 | 17:10 | x64 |
| Wbemcore.dll | 6.2.9200.22903 | 1,207,296 | 11-Oct-2019 | 03:30 | x64 |
| Wbemprox.dll | 6.2.9200.16384 | 35,840 | 26-Jul-2012 | 03:07 | x64 |
| Wmicmiplugin.dll | 6.2.9200.22865 | 556,032 | 17-Aug-2019 | 17:10 | x64 |
| Wmiutils.dll | 6.2.9200.16384 | 115,712 | 26-Jul-2012 | 03:07 | x64 |
| Sppinst.dll | 6.2.9200.21193 | 641,024 | 09-Aug-2014 | 06:56 | x64 |
| Cmifw.dll | 6.2.9200.16384 | 88,576 | 26-Jul-2012 | 03:05 | x64 |
| Firewallofflineapi.dll | 6.2.9200.16384 | 211,968 | 26-Jul-2012 | 03:05 | x64 |
| Appserverai.dll | 6.2.9200.22882 | 135,680 | 17-Sep-2019 | 04:30 | x64 |
| Rdwebai.dll | 6.2.9200.22882 | 126,976 | 17-Sep-2019 | 04:31 | x64 |
| Tssdisai.dll | 6.2.9200.22882 | 145,408 | 17-Sep-2019 | 04:31 | Not applicable |
| Vmhostai.dll | 6.2.9200.22882 | 123,392 | 17-Sep-2019 | 04:31 | x64 |
| Appxreg.dll | 6.2.9200.16384 | 15,360 | 26-Jul-2012 | 03:05 | x64 |
| Bcdeditai.dll | 6.2.9200.21193 | 300,032 | 09-Aug-2014 | 06:55 | x64 |
| Bfsvc.dll | 6.2.9200.16384 | 91,648 | 26-Jul-2012 | 03:05 | x64 |
| Cbscore.dll | 6.2.9200.22903 | 1,162,752 | 11-Oct-2019 | 03:30 | x64 |
| Cbsmsg.dll | 6.2.9200.16384 | 41,472 | 26-Jul-2012 | 03:05 | x64 |
| Ceipfwdai.dll | 6.2.9200.22903 | 212,480 | 11-Oct-2019 | 03:30 | x64 |
| Cleanupai.dll | 6.2.9200.16384 | 31,232 | 26-Jul-2012 | 03:05 | x64 |
| Cmiadapter.dll | 6.2.9200.22882 | 116,736 | 17-Sep-2019 | 04:30 | x64 |
| Cmipnpinstall.dll | 6.2.9200.22865 | 249,344 | 17-Aug-2019 | 17:10 | x64 |
| Cmitrust.dll | 6.2.9200.22865 | 407,040 | 17-Aug-2019 | 17:10 | x64 |
| Cmiv2.dll | 6.2.9200.22865 | 3,293,184 | 17-Aug-2019 | 17:10 | x64 |
| Cntrtextinstaller.dll | 6.2.9200.16384 | 164,864 | 26-Jul-2012 | 03:05 | x64 |
| Configureieoptionalcomponentsai.dll | 6.2.9200.22882 | 73,216 | 17-Sep-2019 | 04:30 | x64 |
| Dpx.dll | 6.2.9200.22903 | 362,496 | 11-Oct-2019 | 03:30 | x64 |
| Drupdate.dll | 6.2.9200.22865 | 244,224 | 17-Aug-2019 | 17:10 | x64 |
| Drvstore.dll | 6.2.9200.22865 | 703,488 | 17-Aug-2019 | 17:10 | x64 |
| Fveupdateai.dll | 6.2.9200.22882 | 57,344 | 17-Sep-2019 | 04:30 | x64 |
| Globalinstallorder.xml | Not applicable | 2,240,509 | 02-Jun-2012 | 20:26 | Not applicable |
| Httpai.dll | 6.2.9200.22882 | 52,224 | 17-Sep-2019 | 04:30 | x64 |
| Iefileinstallai.dll | 6.2.9200.22882 | 58,880 | 17-Sep-2019 | 04:30 | x64 |
| Luainstall.dll | 6.2.9200.16384 | 50,176 | 26-Jul-2012 | 03:06 | x64 |
| Msdelta.dll | 6.2.9200.22903 | 414,208 | 11-Oct-2019 | 03:30 | x64 |
| Msdtcadvancedinstaller.dll | 6.2.9200.22903 | 239,616 | 11-Oct-2019 | 03:30 | x64 |
| Mspatcha.dll | 6.2.9200.16384 | 45,056 | 26-Jul-2012 | 03:07 | x64 |
| Netfxconfig.dll | 6.2.9200.16384 | 34,304 | 26-Jul-2012 | 03:06 | x64 |
| Peerdistai.dll | 6.2.9200.22882 | 67,584 | 17-Sep-2019 | 04:31 | x64 |
| Pkgmgr.exe | 6.2.9200.22865 | 196,096 | 17-Aug-2019 | 17:10 | x64 |
| Poqexec.exe | 6.2.9200.22903 | 148,480 | 11-Oct-2019 | 03:30 | x64 |
| Printadvancedinstaller.dll | 6.2.9200.22865 | 71,168 | 17-Aug-2019 | 17:10 | x64 |
| Registeriepkeysai.dll | 6.2.9200.16384 | 19,456 | 26-Jul-2012 | 03:07 | x64 |
| Securebootai.dll | 6.2.9200.22882 | 36,352 | 17-Sep-2019 | 04:31 | x64 |
| Servicemodelregai.dll | 6.2.9200.22882 | 116,224 | 17-Sep-2019 | 04:31 | x64 |
| Setieinstalleddateai.dll | 6.2.9200.22882 | 42,496 | 17-Sep-2019 | 04:31 | x64 |
| Smiengine.dll | 6.2.9200.22903 | 894,464 | 11-Oct-2019 | 03:30 | x64 |
| Smipi.dll | 6.2.9200.22882 | 110,592 | 17-Sep-2019 | 04:31 | x64 |
| Tifilefetcher.exe | 6.2.9200.22903 | 460,800 | 11-Oct-2019 | 03:30 | x64 |
| Timezoneai.dll | 6.2.9200.16384 | 75,264 | 26-Jul-2012 | 03:07 | x64 |
| Tiworker.exe | 6.2.9200.21193 | 189,440 | 09-Aug-2014 | 06:57 | x64 |
| Wcmtypes.xsd | Not applicable | 1,047 | 02-Jun-2012 | 14:54 | Not applicable |
| Wcp.dll | 6.2.9200.22903 | 2,834,944 | 11-Oct-2019 | 03:30 | x64 |
| Wdscore.dll | 6.2.9200.22865 | 272,384 | 17-Aug-2019 | 17:10 | x64 |
| Winsockai.dll | 6.2.9200.16384 | 60,928 | 26-Jul-2012 | 03:07 | x64 |
| Wrpint.dll | 6.2.9200.16384 | 60,928 | 26-Jul-2012 | 03:08 | x64 |
| Ws2_helper.dll | 6.2.9200.16384 | 59,904 | 26-Jul-2012 | 03:08 | x64 |
| Trustedinstaller.exe | 6.2.9200.21193 | 98,304 | 09-Aug-2014 | 06:57 | x64 |
| Esscli.dll | 6.2.9200.16384 | 283,648 | 26-Jul-2012 | 03:19 | x86 |
| Fastprox.dll | 6.2.9200.22865 | 629,248 | 17-Aug-2019 | 16:15 | x86 |
| Mofd.dll | 6.2.9200.16384 | 195,072 | 26-Jul-2012 | 03:19 | x86 |
| Mofinstall.dll | 6.2.9200.16384 | 61,440 | 26-Jul-2012 | 03:19 | x86 |
| Repdrvfs.dll | 6.2.9200.16384 | 274,944 | 26-Jul-2012 | 03:19 | x86 |
| Wbemcomn.dll | 6.2.9200.21193 | 380,928 | 09-Aug-2014 | 06:36 | x86 |
| Wbemcore.dll | 6.2.9200.22903 | 924,160 | 11-Oct-2019 | 15:17 | x86 |
| Wbemprox.dll | 6.2.9200.16384 | 28,160 | 26-Jul-2012 | 03:19 | x86 |
| Wmicmiplugin.dll | 6.2.9200.22865 | 395,776 | 17-Aug-2019 | 16:15 | x86 |
| Wmiutils.dll | 6.2.9200.16384 | 88,576 | 26-Jul-2012 | 03:19 | x86 |
| Sppinst.dll | 6.2.9200.21193 | 518,656 | 09-Aug-2014 | 06:36 | x86 |
| Cmifw.dll | 6.2.9200.16384 | 73,728 | 26-Jul-2012 | 03:18 | x86 |
| Firewallofflineapi.dll | 6.2.9200.16384 | 181,760 | 26-Jul-2012 | 03:18 | x86 |
| Appxreg.dll | 6.2.9200.16384 | 22,016 | 26-Jul-2012 | 03:17 | x86 |
| Bcdeditai.dll | 6.2.9200.21193 | 285,184 | 09-Aug-2014 | 06:35 | x86 |
| Bfsvc.dll | 6.2.9200.16384 | 91,136 | 26-Jul-2012 | 03:18 | x86 |
| Cbscore.dll | 6.2.9200.22903 | 1,007,104 | 11-Oct-2019 | 15:17 | x86 |
| Cbsmsg.dll | 6.2.9200.16384 | 41,472 | 26-Jul-2012 | 03:18 | x86 |
| Ceipfwdai.dll | 6.2.9200.22903 | 180,736 | 11-Oct-2019 | 15:17 | x86 |
| Cleanupai.dll | 6.2.9200.16384 | 36,352 | 26-Jul-2012 | 03:18 | x86 |
| Cmiadapter.dll | 6.2.9200.22865 | 103,936 | 17-Aug-2019 | 16:15 | x86 |
| Cmipnpinstall.dll | 6.2.9200.22865 | 190,464 | 17-Aug-2019 | 16:15 | x86 |
| Cmitrust.dll | 6.2.9200.21913 | 289,280 | 23-Jun-2016 | 01:48 | x86 |
| Cmiv2.dll | 6.2.9200.22865 | 2,156,032 | 17-Aug-2019 | 16:15 | x86 |
| Cntrtextinstaller.dll | 6.2.9200.22865 | 139,776 | 17-Aug-2019 | 16:15 | x86 |
| Configureieoptionalcomponentsai.dll | 6.2.9200.22865 | 69,632 | 17-Aug-2019 | 16:15 | x86 |
| Dpx.dll | 6.2.9200.22865 | 250,368 | 17-Aug-2019 | 16:15 | x86 |
| Drupdate.dll | 6.2.9200.22865 | 193,024 | 17-Aug-2019 | 16:15 | x86 |
| Drvstore.dll | 6.2.9200.22865 | 549,376 | 17-Aug-2019 | 16:15 | x86 |
| Fveupdateai.dll | 6.2.9200.22865 | 56,320 | 17-Aug-2019 | 16:15 | x86 |
| Globalinstallorder.xml | Not applicable | 2,240,509 | 02-Jun-2012 | 20:26 | Not applicable |
| Httpai.dll | 6.2.9200.22865 | 53,760 | 17-Aug-2019 | 16:15 | x86 |
| Iefileinstallai.dll | 6.2.9200.22865 | 59,904 | 17-Aug-2019 | 16:15 | x86 |
| Luainstall.dll | 6.2.9200.16384 | 39,424 | 26-Jul-2012 | 03:18 | x86 |
| Msdelta.dll | 6.2.9200.22903 | 310,784 | 11-Oct-2019 | 15:17 | x86 |
| Msdtcadvancedinstaller.dll | 6.2.9200.22903 | 200,704 | 11-Oct-2019 | 15:17 | x86 |
| Mspatcha.dll | 6.2.9200.16384 | 38,912 | 26-Jul-2012 | 03:19 | x86 |
| Netfxconfig.dll | 6.2.9200.16384 | 40,448 | 26-Jul-2012 | 03:19 | x86 |
| Peerdistai.dll | 6.2.9200.22865 | 66,048 | 17-Aug-2019 | 16:15 | x86 |
| Pkgmgr.exe | 6.2.9200.22865 | 194,048 | 17-Aug-2019 | 16:15 | x86 |
| Poqexec.exe | 6.2.9200.22903 | 132,608 | 11-Oct-2019 | 15:17 | x86 |
| Printadvancedinstaller.dll | 6.2.9200.22865 | 72,704 | 17-Aug-2019 | 16:15 | x86 |
| Registeriepkeysai.dll | 6.2.9200.16384 | 24,576 | 26-Jul-2012 | 03:19 | x86 |
| Securebootai.dll | 6.2.9200.22882 | 39,936 | 17-Sep-2019 | 03:35 | x86 |
| Servicemodelregai.dll | 6.2.9200.22865 | 96,768 | 17-Aug-2019 | 16:15 | x86 |
| Setieinstalleddateai.dll | 6.2.9200.22865 | 41,984 | 17-Aug-2019 | 16:15 | x86 |
| Smiengine.dll | 6.2.9200.22903 | 700,928 | 11-Oct-2019 | 15:17 | x86 |
| Smipi.dll | 6.2.9200.22865 | 102,400 | 17-Aug-2019 | 16:15 | x86 |
| Tifilefetcher.exe | 6.2.9200.22903 | 380,928 | 11-Oct-2019 | 15:17 | x86 |
| Timezoneai.dll | 6.2.9200.21193 | 67,584 | 09-Aug-2014 | 06:36 | x86 |
| Tiworker.exe | 6.2.9200.21193 | 186,880 | 09-Aug-2014 | 06:37 | x86 |
| Wcmtypes.xsd | Not applicable | 1,047 | 02-Jun-2012 | 14:54 | Not applicable |
| Wcp.dll | 6.2.9200.22903 | 2,187,776 | 11-Oct-2019 | 15:17 | x86 |
| Wdscore.dll | 6.2.9200.22865 | 225,792 | 17-Aug-2019 | 16:15 | x86 |
| Winsockai.dll | 6.2.9200.16384 | 64,512 | 26-Jul-2012 | 03:20 | x86 |
| Wrpint.dll | 6.2.9200.21193 | 48,640 | 09-Aug-2014 | 06:36 | x86 |
| Ws2_helper.dll | 6.2.9200.16384 | 48,128 | 26-Jul-2012 | 03:20 | x86 |
For more information about SSUs, see Servicing stack updates.
Learn about the terminology that Microsoft uses to describe software updates.
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