Servicing stack update for Windows 7 SP1 and Server 2008 R2 SP1: April 14, 2020

Applies to

  • Windows 7 for 32-bit Systems Service Pack 1

  • Windows 7 for x64-based Systems Service Pack 1

  • Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1

  • Windows Server 2008 R2 for x64-based Systems Service Pack 1

  • Windows Server 2008 R2 for x64-based Systems Service Pack 1 (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.

Important Before you install this update, see the Prerequisites section.

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

To install Windows 7 SP1 and Windows Server 2008 R2 SP1 updates released on or after July 2019, you must have the following required updates installed. If you use Windows Update, these required updates will be offered automatically as needed

Important You must restart your device after you install these required updates.

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 KB4550735.

File Information


File attributes

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

Note: The MANIFEST files (.manifest) and MUM files (.mum) that are installed are not listed.

File verification

File hash information

File name

SHA1 hash

SHA256 hash

Windows6.1-KB4550738-x86.msu

5AFA448172C7380EBFC17AD5B85723FDD5954986

CC1C583E5AAD76A248FD9E4C931D6C7B987C70FD75B02141D3AAF36F365FD0F2

Windows6.1-KB4550738-ia64.msu

5FC9B4F4AABDF0E4EEF93632EFE68DF854ADEF60

CD01ECCCE2E8D1B696084CDE3EEF8D44CC4E7587675E0A15A1FA52F01AFE465D

Windows6.1-KB4550738-x64.msu

5D74D1035B6700C74FFA3B9A789D5D36E2BEC497

3BB50B4574121B8852B89A5D4A29393F653EDDD5C36695D3E694DE38C19669FB

For all supported x86-based versions

File name

File version

File size

Date

Time

Apds.dll

6.1.7601.24552

1,798,144

07-Apr-2020

04:57

Apircl.dll

6.1.7601.24552

223,744

07-Apr-2020

04:57

Apss.dll

6.1.7601.24552

201,216

07-Apr-2020

04:57

Cbscore.dll

6.1.7601.24552

845,824

07-Apr-2020

04:55

Cbsmsg.dll

6.1.7601.24552

28,672

07-Apr-2020

04:24

Cmiadapter.dll

6.1.7601.24552

120,320

07-Apr-2020

04:55

Cmitrust.dll

6.1.7601.24552

296,960

07-Apr-2020

04:55

Cmiv2.dll

6.1.7601.24552

2,040,832

07-Apr-2020

04:55

Cntrtextinstaller.dll

6.1.7601.24552

143,872

07-Apr-2020

04:55

Dpx.dll

6.1.7601.24552

257,024

07-Apr-2020

04:56

Drupdate.dll

6.1.7601.24552

174,080

07-Apr-2020

04:56

Drvstore.dll

6.1.7601.24552

324,096

07-Apr-2020

04:56

Esscli.dll

6.1.7601.24552

266,240

07-Apr-2020

04:56

Extendedsecurityupdatesai.dll

6.1.7601.24552

90,624

07-Apr-2020

04:24

Fastprox.dll

6.1.7601.24552

606,720

07-Apr-2020

04:56

Globalinstallorder.xml

Not applicable

1,977,464

12-Mar-2020

00:51

Helpcins.dll

6.1.7601.24552

105,472

07-Apr-2020

04:56

Locdrv.dll

6.1.7601.24552

229,888

07-Apr-2020

04:56

Mofd.dll

6.1.7601.24552

192,000

07-Apr-2020

04:56

Mofinstall.dll

6.1.7601.24552

58,880

07-Apr-2020

04:56

Msdelta.dll

6.1.7601.24552

305,664

07-Apr-2020

04:56

Mspatcha.dll

6.1.7601.24552

35,328

07-Apr-2020

04:56

Oemhelpins.dll

6.1.7601.24552

151,040

07-Apr-2020

04:56

Pkgmgr.exe

6.1.7601.24552

209,920

07-Apr-2020

04:24

Poqexec.exe

6.1.7601.24552

123,904

07-Apr-2020

04:24

Repdrvfs.dll

6.1.7601.24552

302,080

07-Apr-2020

04:56

Smiengine.dll

6.1.7601.24552

697,344

07-Apr-2020

04:57

Smipi.dll

6.1.7601.24552

98,816

07-Apr-2020

04:57

Svcini.exe

6.1.7601.24552

16,384

07-Apr-2020

04:24

Wbemcomn.dll

6.1.7601.24552

363,520

07-Apr-2020

04:57

Wbemcore.dll

6.1.7601.24552

774,656

07-Apr-2020

04:57

Wbemprox.dll

6.1.7601.24552

29,184

07-Apr-2020

04:57

Wcmtypes.xsd

Not applicable

1,047

26-Nov-2019

21:19

Wcp.dll

6.1.7601.24552

1,913,344

07-Apr-2020

04:57

Wdscore.dll

6.1.7601.24552

190,464

07-Apr-2020

04:57

Wmicmiplugin.dll

6.1.7601.24552

351,744

07-Apr-2020

04:57

Wmiutils.dll

6.1.7601.24552

85,504

07-Apr-2020

04:57

Wrpint.dll

6.1.7601.24552

54,272

07-Apr-2020

04:23

Xmllite.dll

1.3.1001.0

180,736

07-Apr-2020

04:57

For all supported ia64-based versions

File name

File version

File size

Date

Time

Apds.dll

6.1.7601.24552

3,342,336

07-Apr-2020

04:35

Apircl.dll

6.1.7601.24552

752,128

07-Apr-2020

04:35

Apss.dll

6.1.7601.24552

560,128

07-Apr-2020

04:35

Cbscore.dll

6.1.7601.24552

1,837,056

07-Apr-2020

04:35

Cbsmsg.dll

6.1.7601.24552

40,448

07-Apr-2020

04:35

Cmiadapter.dll

6.1.7601.24552

284,672

07-Apr-2020

04:35

Cmitrust.dll

6.1.7601.24552

987,136

07-Apr-2020

04:35

Cmiv2.dll

6.1.7601.24552

6,536,192

07-Apr-2020

04:35

Cntrtextinstaller.dll

6.1.7601.24552

357,376

07-Apr-2020

04:35

Dpx.dll

6.1.7601.24552

770,560

07-Apr-2020

04:35

Drupdate.dll

6.1.7601.24552

390,656

07-Apr-2020

04:35

Drvstore.dll

6.1.7601.24552

742,912

07-Apr-2020

04:35

Esscli.dll

6.1.7601.24552

1,011,200

07-Apr-2020

04:35

Extendedsecurityupdatesai.dll

6.1.7601.24552

217,600

07-Apr-2020

04:09

Fastprox.dll

6.1.7601.24552

2,100,224

07-Apr-2020

04:35

Globalinstallorder.xml

Not applicable

1,977,464

12-Mar-2020

00:50

Helpcins.dll

6.1.7601.24552

187,904

07-Apr-2020

04:35

Locdrv.dll

6.1.7601.24552

803,328

07-Apr-2020

04:35

Mofd.dll

6.1.7601.24552

643,584

07-Apr-2020

04:35

Mofinstall.dll

6.1.7601.24552

193,024

07-Apr-2020

04:35

Msdelta.dll

6.1.7601.24552

890,880

07-Apr-2020

04:35

Mspatcha.dll

6.1.7601.24552

111,104

07-Apr-2020

04:35

Oemhelpins.dll

6.1.7601.24552

420,352

07-Apr-2020

04:35

Pkgmgr.exe

6.1.7601.24552

334,848

07-Apr-2020

04:10

Poqexec.exe

6.1.7601.24552

272,384

07-Apr-2020

04:10

Repdrvfs.dll

6.1.7601.24552

1,067,520

07-Apr-2020

04:35

Smiengine.dll

6.1.7601.24552

1,953,792

07-Apr-2020

04:35

Smipi.dll

6.1.7601.24552

186,880

07-Apr-2020

04:35

Svcini.exe

6.1.7601.24552

41,984

07-Apr-2020

04:09

Wbemcomn.dll

6.1.7601.24552

1,005,056

07-Apr-2020

04:36

Wbemcore.dll

6.1.7601.24552

2,947,072

07-Apr-2020

04:36

Wbemprox.dll

6.1.7601.24552

102,912

07-Apr-2020

04:36

Wcmtypes.xsd

Not applicable

1,047

18-Nov-2018

02:59

Wcp.dll

6.1.7601.24552

5,137,408

07-Apr-2020

04:36

Wdscore.dll

6.1.7601.24552

600,576

07-Apr-2020

04:36

Wmicmiplugin.dll

6.1.7601.24552

940,544

07-Apr-2020

04:36

Wmiutils.dll

6.1.7601.24552

273,408

07-Apr-2020

04:36

Wrpint.dll

6.1.7601.24552

128,000

07-Apr-2020

04:36

Xmllite.dll

1.3.1001.0

449,024

07-Apr-2020

04:36

Apds.dll

6.1.7601.24552

1,798,144

07-Apr-2020

04:57

Apircl.dll

6.1.7601.24552

223,744

07-Apr-2020

04:57

Apss.dll

6.1.7601.24552

201,216

07-Apr-2020

04:57

Cbscore.dll

6.1.7601.24552

845,824

07-Apr-2020

04:55

Cbsmsg.dll

6.1.7601.24552

28,672

07-Apr-2020

04:24

Cmiadapter.dll

6.1.7601.24552

120,320

07-Apr-2020

04:55

Cmitrust.dll

6.1.7601.24552

296,960

07-Apr-2020

04:55

Cmiv2.dll

6.1.7601.24552

2,040,832

07-Apr-2020

04:55

Cntrtextinstaller.dll

6.1.7601.24552

143,872

07-Apr-2020

04:55

Dpx.dll

6.1.7601.24552

257,024

07-Apr-2020

04:56

Drupdate.dll

6.1.7601.24552

174,080

07-Apr-2020

04:56

Drvstore.dll

6.1.7601.24552

324,096

07-Apr-2020

04:56

Esscli.dll

6.1.7601.24552

266,240

07-Apr-2020

04:56

Extendedsecurityupdatesai.dll

6.1.7601.24552

90,624

07-Apr-2020

04:24

Fastprox.dll

6.1.7601.24552

606,720

07-Apr-2020

04:56

Globalinstallorder.xml

Not applicable

1,977,464

12-Mar-2020

00:51

Helpcins.dll

6.1.7601.24552

105,472

07-Apr-2020

04:56

Locdrv.dll

6.1.7601.24552

229,888

07-Apr-2020

04:56

Mofd.dll

6.1.7601.24552

192,000

07-Apr-2020

04:56

Mofinstall.dll

6.1.7601.24552

58,880

07-Apr-2020

04:56

Msdelta.dll

6.1.7601.24552

305,664

07-Apr-2020

04:56

Mspatcha.dll

6.1.7601.24552

35,328

07-Apr-2020

04:56

Oemhelpins.dll

6.1.7601.24552

151,040

07-Apr-2020

04:56

Pkgmgr.exe

6.1.7601.24552

209,920

07-Apr-2020

04:24

Poqexec.exe

6.1.7601.24552

123,904

07-Apr-2020

04:24

Repdrvfs.dll

6.1.7601.24552

302,080

07-Apr-2020

04:56

Smiengine.dll

6.1.7601.24552

697,344

07-Apr-2020

04:57

Smipi.dll

6.1.7601.24552

98,816

07-Apr-2020

04:57

Svcini.exe

6.1.7601.24552

16,384

07-Apr-2020

04:24

Wbemcomn.dll

6.1.7601.24552

363,520

07-Apr-2020

04:57

Wbemcore.dll

6.1.7601.24552

774,656

07-Apr-2020

04:57

Wbemprox.dll

6.1.7601.24552

29,184

07-Apr-2020

04:57

Wcmtypes.xsd

Not applicable

1,047

26-Nov-2019

21:19

Wcp.dll

6.1.7601.24552

1,913,344

07-Apr-2020

04:57

Wdscore.dll

6.1.7601.24552

190,464

07-Apr-2020

04:57

Wmicmiplugin.dll

6.1.7601.24552

351,744

07-Apr-2020

04:57

Wmiutils.dll

6.1.7601.24552

85,504

07-Apr-2020

04:57

Wrpint.dll

6.1.7601.24552

54,272

07-Apr-2020

04:23

Xmllite.dll

1.3.1001.0

180,736

07-Apr-2020

04:57

For all supported x64-based versions

File name

File version

File size

Date

Time

Apds.dll

6.1.7601.24552

2,172,928

07-Apr-2020

04:52

Apircl.dll

6.1.7601.24552

276,480

07-Apr-2020

04:52

Apss.dll

6.1.7601.24552

235,520

07-Apr-2020

04:52

Cbscore.dll

6.1.7601.24552

976,896

07-Apr-2020

04:51

Cbsmsg.dll

6.1.7601.24552

28,672

07-Apr-2020

04:51

Cmiadapter.dll

6.1.7601.24552

125,952

07-Apr-2020

04:51

Cmitrust.dll

6.1.7601.24552

479,232

07-Apr-2020

04:51

Cmiv2.dll

6.1.7601.24552

3,739,136

07-Apr-2020

04:51

Cntrtextinstaller.dll

6.1.7601.24552

170,496

07-Apr-2020

04:51

Dpx.dll

6.1.7601.24552

399,872

07-Apr-2020

04:51

Drupdate.dll

6.1.7601.24552

204,288

07-Apr-2020

04:51

Drvstore.dll

6.1.7601.24552

423,936

07-Apr-2020

04:51

Esscli.dll

6.1.7601.24552

440,320

07-Apr-2020

04:52

Extendedsecurityupdatesai.dll

6.1.7601.24552

103,936

07-Apr-2020

04:18

Fastprox.dll

6.1.7601.24552

909,824

07-Apr-2020

04:52

Globalinstallorder.xml

Not applicable

1,977,464

12-Mar-2020

00:50

Helpcins.dll

6.1.7601.24552

142,336

07-Apr-2020

04:52

Locdrv.dll

6.1.7601.24552

370,176

07-Apr-2020

04:52

Mofd.dll

6.1.7601.24552

278,528

07-Apr-2020

04:52

Mofinstall.dll

6.1.7601.24552

76,288

07-Apr-2020

04:52

Msdelta.dll

6.1.7601.24552

452,096

07-Apr-2020

04:52

Mspatcha.dll

6.1.7601.24552

46,592

07-Apr-2020

04:52

Oemhelpins.dll

6.1.7601.24552

222,208

07-Apr-2020

04:52

Pkgmgr.exe

6.1.7601.24552

199,168

07-Apr-2020

04:18

Poqexec.exe

6.1.7601.24552

142,336

07-Apr-2020

04:18

Repdrvfs.dll

6.1.7601.24552

454,144

07-Apr-2020

04:52

Smiengine.dll

6.1.7601.24552

933,376

07-Apr-2020

04:52

Smipi.dll

6.1.7601.24552

104,448

07-Apr-2020

04:52

Svcini.exe

6.1.7601.24552

17,920

07-Apr-2020

04:18

Wbemcomn.dll

6.1.7601.24552

529,920

07-Apr-2020

04:52

Wbemcore.dll

6.1.7601.24552

1,220,096

07-Apr-2020

04:52

Wbemprox.dll

6.1.7601.24552

43,520

07-Apr-2020

04:52

Wcmtypes.xsd

Not applicable

1,047

18-Nov-2018

02:57

Wcp.dll

6.1.7601.24552

2,762,752

07-Apr-2020

04:52

Wdscore.dll

6.1.7601.24552

271,872

07-Apr-2020

04:52

Wmicmiplugin.dll

6.1.7601.24552

525,824

07-Apr-2020

04:52

Wmiutils.dll

6.1.7601.24552

137,216

07-Apr-2020

04:52

Wrpint.dll

6.1.7601.24552

60,928

07-Apr-2020

04:52

Xmllite.dll

1.3.1001.0

198,656

07-Apr-2020

04:52

Apds.dll

6.1.7601.24552

1,798,144

07-Apr-2020

04:57

Apircl.dll

6.1.7601.24552

223,744

07-Apr-2020

04:57

Apss.dll

6.1.7601.24552

201,216

07-Apr-2020

04:57

Cbscore.dll

6.1.7601.24552

845,824

07-Apr-2020

04:55

Cbsmsg.dll

6.1.7601.24552

28,672

07-Apr-2020

04:24

Cmiadapter.dll

6.1.7601.24552

120,320

07-Apr-2020

04:55

Cmitrust.dll

6.1.7601.24552

296,960

07-Apr-2020

04:55

Cmiv2.dll

6.1.7601.24552

2,040,832

07-Apr-2020

04:55

Cntrtextinstaller.dll

6.1.7601.24552

143,872

07-Apr-2020

04:55

Dpx.dll

6.1.7601.24552

257,024

07-Apr-2020

04:56

Drupdate.dll

6.1.7601.24552

174,080

07-Apr-2020

04:56

Drvstore.dll

6.1.7601.24552

324,096

07-Apr-2020

04:56

Esscli.dll

6.1.7601.24552

266,240

07-Apr-2020

04:56

Extendedsecurityupdatesai.dll

6.1.7601.24552

90,624

07-Apr-2020

04:24

Fastprox.dll

6.1.7601.24552

606,720

07-Apr-2020

04:56

Globalinstallorder.xml

Not applicable

1,977,464

12-Mar-2020

00:51

Helpcins.dll

6.1.7601.24552

105,472

07-Apr-2020

04:56

Locdrv.dll

6.1.7601.24552

229,888

07-Apr-2020

04:56

Mofd.dll

6.1.7601.24552

192,000

07-Apr-2020

04:56

Mofinstall.dll

6.1.7601.24552

58,880

07-Apr-2020

04:56

Msdelta.dll

6.1.7601.24552

305,664

07-Apr-2020

04:56

Mspatcha.dll

6.1.7601.24552

35,328

07-Apr-2020

04:56

Oemhelpins.dll

6.1.7601.24552

151,040

07-Apr-2020

04:56

Pkgmgr.exe

6.1.7601.24552

209,920

07-Apr-2020

04:24

Poqexec.exe

6.1.7601.24552

123,904

07-Apr-2020

04:24

Repdrvfs.dll

6.1.7601.24552

302,080

07-Apr-2020

04:56

Smiengine.dll

6.1.7601.24552

697,344

07-Apr-2020

04:57

Smipi.dll

6.1.7601.24552

98,816

07-Apr-2020

04:57

Svcini.exe

6.1.7601.24552

16,384

07-Apr-2020

04:24

Wbemcomn.dll

6.1.7601.24552

363,520

07-Apr-2020

04:57

Wbemcore.dll

6.1.7601.24552

774,656

07-Apr-2020

04:57

Wbemprox.dll

6.1.7601.24552

29,184

07-Apr-2020

04:57

Wcmtypes.xsd

Not applicable

1,047

26-Nov-2019

21:19

Wcp.dll

6.1.7601.24552

1,913,344

07-Apr-2020

04:57

Wdscore.dll

6.1.7601.24552

190,464

07-Apr-2020

04:57

Wmicmiplugin.dll

6.1.7601.24552

351,744

07-Apr-2020

04:57

Wmiutils.dll

6.1.7601.24552

85,504

07-Apr-2020

04:57

Wrpint.dll

6.1.7601.24552

54,272

07-Apr-2020

04:23

Xmllite.dll

1.3.1001.0

180,736

07-Apr-2020

04:57

References

For information on SSUs, see the following articles:

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

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