Servicing stack update for Windows 7 SP1 and Server 2008 R2 SP1: May 12, 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 KB4550738.

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-KB4555449-x86.msu

FDFF2FBC283DED23C353F03C18BD7FE0D8BC1591

D4E3ED96C9F9B11F28A7B254A2694EF6C9FC16211E05E28FC98E061585A33814

Windows6.1-KB4555449-ia64.msu

504C48EC6FF1D800B111F0DEA3C4180BDD07DD7F

786AFB1D5876A8BE0A8F6D781F5A04A1647A9BD68A40792CD2B47364FD636BA9

Windows6.1-KB4555449-x64.msu

AB8A5A479FC67F746F95465F8D6F03CA6E368FA0

6BA2330D090AAA484164D7781EB91D64DEE64D51D153D4E3C558F1A286DC7C2A

For all supported x86-based versions

File name

File version

File size

Date

Time

Apds.dll

6.1.7601.24553

1,798,144

23-Apr-2020

01:09

Apircl.dll

6.1.7601.24553

223,744

23-Apr-2020

01:09

Apss.dll

6.1.7601.24553

201,216

23-Apr-2020

01:09

Cbscore.dll

6.1.7601.24553

845,824

23-Apr-2020

01:08

Cbsmsg.dll

6.1.7601.24553

28,672

23-Apr-2020

00:36

Cmiadapter.dll

6.1.7601.24553

120,320

23-Apr-2020

01:08

Cmitrust.dll

6.1.7601.24553

296,960

23-Apr-2020

01:08

Cmiv2.dll

6.1.7601.24553

2,040,832

23-Apr-2020

01:08

Cntrtextinstaller.dll

6.1.7601.24553

143,872

23-Apr-2020

01:08

Dpx.dll

6.1.7601.24553

257,024

23-Apr-2020

01:08

Drupdate.dll

6.1.7601.24553

174,080

23-Apr-2020

01:08

Drvstore.dll

6.1.7601.24553

324,096

23-Apr-2020

01:08

Esscli.dll

6.1.7601.24553

266,240

23-Apr-2020

01:09

Extendedsecurityupdatesai.dll

6.1.7601.24553

90,624

23-Apr-2020

00:36

Fastprox.dll

6.1.7601.24553

606,720

23-Apr-2020

01:09

Globalinstallorder.xml

Not applicable

1,977,464

16-Apr-2020

19:43

Helpcins.dll

6.1.7601.24553

105,472

23-Apr-2020

01:09

Locdrv.dll

6.1.7601.24553

229,888

23-Apr-2020

01:09

Mofd.dll

6.1.7601.24553

192,000

23-Apr-2020

01:09

Mofinstall.dll

6.1.7601.24553

58,880

23-Apr-2020

01:09

Msdelta.dll

6.1.7601.24553

305,664

23-Apr-2020

01:09

Mspatcha.dll

6.1.7601.24553

35,328

23-Apr-2020

01:09

Oemhelpins.dll

6.1.7601.24553

151,040

23-Apr-2020

01:09

Pkgmgr.exe

6.1.7601.24553

209,920

23-Apr-2020

00:36

Poqexec.exe

6.1.7601.24553

123,904

23-Apr-2020

00:36

Repdrvfs.dll

6.1.7601.24553

302,080

23-Apr-2020

01:09

Smiengine.dll

6.1.7601.24553

697,344

23-Apr-2020

01:09

Smipi.dll

6.1.7601.24553

98,816

23-Apr-2020

01:09

Svcini.exe

6.1.7601.24553

16,384

23-Apr-2020

00:36

Wbemcomn.dll

6.1.7601.24553

363,520

23-Apr-2020

01:10

Wbemcore.dll

6.1.7601.24553

774,656

23-Apr-2020

01:10

Wbemprox.dll

6.1.7601.24553

29,184

23-Apr-2020

01:10

Wcmtypes.xsd

Not applicable

1,047

26-Nov-2019

21:19

Wcp.dll

6.1.7601.24553

1,913,344

23-Apr-2020

01:10

Wdscore.dll

6.1.7601.24553

190,464

23-Apr-2020

01:10

Wmicmiplugin.dll

6.1.7601.24553

351,744

23-Apr-2020

01:10

Wmiutils.dll

6.1.7601.24553

85,504

23-Apr-2020

01:10

Wrpint.dll

6.1.7601.24553

54,272

23-Apr-2020

00:34

Xmllite.dll

1.3.1001.0

180,736

23-Apr-2020

01:10

For all supported ia64-based versions

File name

File version

File size

Date

Time

Apds.dll

6.1.7601.24553

3,342,336

23-Apr-2020

00:46

Apircl.dll

6.1.7601.24553

752,128

23-Apr-2020

00:46

Apss.dll

6.1.7601.24553

560,128

23-Apr-2020

00:46

Cbscore.dll

6.1.7601.24553

1,837,056

23-Apr-2020

00:45

Cbsmsg.dll

6.1.7601.24553

40,448

23-Apr-2020

00:45

Cmiadapter.dll

6.1.7601.24553

284,672

23-Apr-2020

00:45

Cmitrust.dll

6.1.7601.24553

987,136

23-Apr-2020

00:45

Cmiv2.dll

6.1.7601.24553

6,536,192

23-Apr-2020

00:45

Cntrtextinstaller.dll

6.1.7601.24553

357,376

23-Apr-2020

00:45

Dpx.dll

6.1.7601.24553

770,560

23-Apr-2020

00:46

Drupdate.dll

6.1.7601.24553

390,656

23-Apr-2020

00:46

Drvstore.dll

6.1.7601.24553

742,912

23-Apr-2020

00:46

Esscli.dll

6.1.7601.24553

1,011,200

23-Apr-2020

00:46

Extendedsecurityupdatesai.dll

6.1.7601.24553

218,112

23-Apr-2020

00:19

Fastprox.dll

6.1.7601.24553

2,100,224

23-Apr-2020

00:46

Globalinstallorder.xml

Not applicable

1,977,464

12-Mar-2020

00:50

Helpcins.dll

6.1.7601.24553

187,904

23-Apr-2020

00:46

Locdrv.dll

6.1.7601.24553

803,328

23-Apr-2020

00:46

Mofd.dll

6.1.7601.24553

643,584

23-Apr-2020

00:46

Mofinstall.dll

6.1.7601.24553

193,024

23-Apr-2020

00:46

Msdelta.dll

6.1.7601.24553

890,880

23-Apr-2020

00:46

Mspatcha.dll

6.1.7601.24553

111,104

23-Apr-2020

00:46

Oemhelpins.dll

6.1.7601.24553

420,352

23-Apr-2020

00:46

Pkgmgr.exe

6.1.7601.24553

334,848

23-Apr-2020

00:20

Poqexec.exe

6.1.7601.24553

272,384

23-Apr-2020

00:19

Repdrvfs.dll

6.1.7601.24553

1,067,520

23-Apr-2020

00:46

Smiengine.dll

6.1.7601.24553

1,953,792

23-Apr-2020

00:46

Smipi.dll

6.1.7601.24553

186,880

23-Apr-2020

00:46

Svcini.exe

6.1.7601.24553

41,984

23-Apr-2020

00:19

Wbemcomn.dll

6.1.7601.24553

1,005,056

23-Apr-2020

00:46

Wbemcore.dll

6.1.7601.24553

2,947,072

23-Apr-2020

00:46

Wbemprox.dll

6.1.7601.24553

102,912

23-Apr-2020

00:46

Wcmtypes.xsd

Not applicable

1,047

18-Nov-2018

02:59

Wcp.dll

6.1.7601.24553

5,137,408

23-Apr-2020

00:46

Wdscore.dll

6.1.7601.24553

600,576

23-Apr-2020

00:46

Wmicmiplugin.dll

6.1.7601.24553

940,544

23-Apr-2020

00:46

Wmiutils.dll

6.1.7601.24553

273,408

23-Apr-2020

00:46

Wrpint.dll

6.1.7601.24553

128,000

23-Apr-2020

00:46

Xmllite.dll

1.3.1001.0

449,024

23-Apr-2020

00:46

Apds.dll

6.1.7601.24553

1,798,144

23-Apr-2020

01:09

Apircl.dll

6.1.7601.24553

223,744

23-Apr-2020

01:09

Apss.dll

6.1.7601.24553

201,216

23-Apr-2020

01:09

Cbscore.dll

6.1.7601.24553

845,824

23-Apr-2020

01:08

Cbsmsg.dll

6.1.7601.24553

28,672

23-Apr-2020

00:36

Cmiadapter.dll

6.1.7601.24553

120,320

23-Apr-2020

01:08

Cmitrust.dll

6.1.7601.24553

296,960

23-Apr-2020

01:08

Cmiv2.dll

6.1.7601.24553

2,040,832

23-Apr-2020

01:08

Cntrtextinstaller.dll

6.1.7601.24553

143,872

23-Apr-2020

01:08

Dpx.dll

6.1.7601.24553

257,024

23-Apr-2020

01:08

Drupdate.dll

6.1.7601.24553

174,080

23-Apr-2020

01:08

Drvstore.dll

6.1.7601.24553

324,096

23-Apr-2020

01:08

Esscli.dll

6.1.7601.24553

266,240

23-Apr-2020

01:09

Extendedsecurityupdatesai.dll

6.1.7601.24553

90,624

23-Apr-2020

00:36

Fastprox.dll

6.1.7601.24553

606,720

23-Apr-2020

01:09

Globalinstallorder.xml

Not applicable

1,977,464

16-Apr-2020

19:43

Helpcins.dll

6.1.7601.24553

105,472

23-Apr-2020

01:09

Locdrv.dll

6.1.7601.24553

229,888

23-Apr-2020

01:09

Mofd.dll

6.1.7601.24553

192,000

23-Apr-2020

01:09

Mofinstall.dll

6.1.7601.24553

58,880

23-Apr-2020

01:09

Msdelta.dll

6.1.7601.24553

305,664

23-Apr-2020

01:09

Mspatcha.dll

6.1.7601.24553

35,328

23-Apr-2020

01:09

Oemhelpins.dll

6.1.7601.24553

151,040

23-Apr-2020

01:09

Pkgmgr.exe

6.1.7601.24553

209,920

23-Apr-2020

00:36

Poqexec.exe

6.1.7601.24553

123,904

23-Apr-2020

00:36

Repdrvfs.dll

6.1.7601.24553

302,080

23-Apr-2020

01:09

Smiengine.dll

6.1.7601.24553

697,344

23-Apr-2020

01:09

Smipi.dll

6.1.7601.24553

98,816

23-Apr-2020

01:09

Svcini.exe

6.1.7601.24553

16,384

23-Apr-2020

00:36

Wbemcomn.dll

6.1.7601.24553

363,520

23-Apr-2020

01:10

Wbemcore.dll

6.1.7601.24553

774,656

23-Apr-2020

01:10

Wbemprox.dll

6.1.7601.24553

29,184

23-Apr-2020

01:10

Wcmtypes.xsd

Not applicable

1,047

26-Nov-2019

21:19

Wcp.dll

6.1.7601.24553

1,913,344

23-Apr-2020

01:10

Wdscore.dll

6.1.7601.24553

190,464

23-Apr-2020

01:10

Wmicmiplugin.dll

6.1.7601.24553

351,744

23-Apr-2020

01:10

Wmiutils.dll

6.1.7601.24553

85,504

23-Apr-2020

01:10

Wrpint.dll

6.1.7601.24553

54,272

23-Apr-2020

00:34

Xmllite.dll

1.3.1001.0

180,736

23-Apr-2020

01:10

For all supported x64-based versions

File name

File version

File size

Date

Time

Apds.dll

6.1.7601.24553

2,172,928

23-Apr-2020

01:02

Apircl.dll

6.1.7601.24553

276,480

23-Apr-2020

01:02

Apss.dll

6.1.7601.24553

235,520

23-Apr-2020

01:02

Cbscore.dll

6.1.7601.24553

976,896

23-Apr-2020

01:02

Cbsmsg.dll

6.1.7601.24553

28,672

23-Apr-2020

01:02

Cmiadapter.dll

6.1.7601.24553

125,952

23-Apr-2020

01:02

Cmitrust.dll

6.1.7601.24553

479,232

23-Apr-2020

01:02

Cmiv2.dll

6.1.7601.24553

3,739,136

23-Apr-2020

01:02

Cntrtextinstaller.dll

6.1.7601.24553

170,496

23-Apr-2020

01:02

Dpx.dll

6.1.7601.24553

399,872

23-Apr-2020

01:02

Drupdate.dll

6.1.7601.24553

204,288

23-Apr-2020

01:02

Drvstore.dll

6.1.7601.24553

423,936

23-Apr-2020

01:02

Esscli.dll

6.1.7601.24553

440,320

23-Apr-2020

01:02

Extendedsecurityupdatesai.dll

6.1.7601.24553

103,936

23-Apr-2020

00:28

Fastprox.dll

6.1.7601.24553

909,824

23-Apr-2020

01:02

Globalinstallorder.xml

Not applicable

1,977,464

12-Mar-2020

00:50

Helpcins.dll

6.1.7601.24553

142,336

23-Apr-2020

01:02

Locdrv.dll

6.1.7601.24553

370,176

23-Apr-2020

01:02

Mofd.dll

6.1.7601.24553

278,528

23-Apr-2020

01:02

Mofinstall.dll

6.1.7601.24553

76,288

23-Apr-2020

01:02

Msdelta.dll

6.1.7601.24553

452,096

23-Apr-2020

01:02

Mspatcha.dll

6.1.7601.24553

46,592

23-Apr-2020

01:02

Oemhelpins.dll

6.1.7601.24553

222,208

23-Apr-2020

01:02

Pkgmgr.exe

6.1.7601.24553

199,168

23-Apr-2020

00:28

Poqexec.exe

6.1.7601.24553

142,336

23-Apr-2020

00:28

Repdrvfs.dll

6.1.7601.24553

454,144

23-Apr-2020

01:02

Smiengine.dll

6.1.7601.24553

933,376

23-Apr-2020

01:02

Smipi.dll

6.1.7601.24553

104,448

23-Apr-2020

01:02

Svcini.exe

6.1.7601.24553

17,920

23-Apr-2020

00:28

Wbemcomn.dll

6.1.7601.24553

529,920

23-Apr-2020

01:02

Wbemcore.dll

6.1.7601.24553

1,220,096

23-Apr-2020

01:02

Wbemprox.dll

6.1.7601.24553

43,520

23-Apr-2020

01:02

Wcmtypes.xsd

Not applicable

1,047

18-Nov-2018

02:57

Wcp.dll

6.1.7601.24553

2,762,752

23-Apr-2020

01:02

Wdscore.dll

6.1.7601.24553

271,872

23-Apr-2020

01:02

Wmicmiplugin.dll

6.1.7601.24553

525,824

23-Apr-2020

01:02

Wmiutils.dll

6.1.7601.24553

137,216

23-Apr-2020

01:02

Wrpint.dll

6.1.7601.24553

60,928

23-Apr-2020

01:02

Xmllite.dll

1.3.1001.0

198,656

23-Apr-2020

01:02

Apds.dll

6.1.7601.24553

1,798,144

23-Apr-2020

01:09

Apircl.dll

6.1.7601.24553

223,744

23-Apr-2020

01:09

Apss.dll

6.1.7601.24553

201,216

23-Apr-2020

01:09

Cbscore.dll

6.1.7601.24553

845,824

23-Apr-2020

01:08

Cbsmsg.dll

6.1.7601.24553

28,672

23-Apr-2020

00:36

Cmiadapter.dll

6.1.7601.24553

120,320

23-Apr-2020

01:08

Cmitrust.dll

6.1.7601.24553

296,960

23-Apr-2020

01:08

Cmiv2.dll

6.1.7601.24553

2,040,832

23-Apr-2020

01:08

Cntrtextinstaller.dll

6.1.7601.24553

143,872

23-Apr-2020

01:08

Dpx.dll

6.1.7601.24553

257,024

23-Apr-2020

01:08

Drupdate.dll

6.1.7601.24553

174,080

23-Apr-2020

01:08

Drvstore.dll

6.1.7601.24553

324,096

23-Apr-2020

01:08

Esscli.dll

6.1.7601.24553

266,240

23-Apr-2020

01:09

Extendedsecurityupdatesai.dll

6.1.7601.24553

90,624

23-Apr-2020

00:36

Fastprox.dll

6.1.7601.24553

606,720

23-Apr-2020

01:09

Globalinstallorder.xml

Not applicable

1,977,464

16-Apr-2020

19:43

Helpcins.dll

6.1.7601.24553

105,472

23-Apr-2020

01:09

Locdrv.dll

6.1.7601.24553

229,888

23-Apr-2020

01:09

Mofd.dll

6.1.7601.24553

192,000

23-Apr-2020

01:09

Mofinstall.dll

6.1.7601.24553

58,880

23-Apr-2020

01:09

Msdelta.dll

6.1.7601.24553

305,664

23-Apr-2020

01:09

Mspatcha.dll

6.1.7601.24553

35,328

23-Apr-2020

01:09

Oemhelpins.dll

6.1.7601.24553

151,040

23-Apr-2020

01:09

Pkgmgr.exe

6.1.7601.24553

209,920

23-Apr-2020

00:36

Poqexec.exe

6.1.7601.24553

123,904

23-Apr-2020

00:36

Repdrvfs.dll

6.1.7601.24553

302,080

23-Apr-2020

01:09

Smiengine.dll

6.1.7601.24553

697,344

23-Apr-2020

01:09

Smipi.dll

6.1.7601.24553

98,816

23-Apr-2020

01:09

Svcini.exe

6.1.7601.24553

16,384

23-Apr-2020

00:36

Wbemcomn.dll

6.1.7601.24553

363,520

23-Apr-2020

01:10

Wbemcore.dll

6.1.7601.24553

774,656

23-Apr-2020

01:10

Wbemprox.dll

6.1.7601.24553

29,184

23-Apr-2020

01:10

Wcmtypes.xsd

Not applicable

1,047

26-Nov-2019

21:19

Wcp.dll

6.1.7601.24553

1,913,344

23-Apr-2020

01:10

Wdscore.dll

6.1.7601.24553

190,464

23-Apr-2020

01:10

Wmicmiplugin.dll

6.1.7601.24553

351,744

23-Apr-2020

01:10

Wmiutils.dll

6.1.7601.24553

85,504

23-Apr-2020

01:10

Wrpint.dll

6.1.7601.24553

54,272

23-Apr-2020

00:34

Xmllite.dll

1.3.1001.0

180,736

23-Apr-2020

01:10

References

For information on SSUs, see the following articles:

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

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