Additional information about this security update

For more information about this security update as it relates to Windows 8.1, Windows RT 8.1, and Windows Server 2012 R2, see the following article in the Microsoft Knowledge Base:

4345681 Security Only updates for .NET Framework 3.5 SP1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, and 4.7.2 for Windows 8.1, RT 8.1 and Server 2012 R2 (KB 4345681)

How to obtain and install the update

Method 1: Microsoft Update Catalog

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

Method 2: Windows Software Update Services (WSUS)

On your WSUS server, follow these steps:

  1. Click Start, click Administrative Tools, and then click Microsoft Windows Server Update Services 3.0.

  2. Expand ComputerName, and then click Action.

  3. Click Import Updates.

  4. WSUS opens a browser window in which you may be prompted to install an ActiveX control. You must install the ActiveX control to continue.

  5. After the ActiveX control is installed, you see the Microsoft Update Catalog screen. Type 4345681 in the Search box, and then click Search.

  6. Locate the .NET Framework packages that match the operating systems, languages, and processors in your environment. Click Add to add them to your basket.

  7. After you select all the packages that you require, click View Basket.

  8. To import the packages to your WSUS server, click Import.

  9. After the packages are imported, click Close to return to WSUS.

The updates are now available for installation through WSUS.

Update deployment information

For deployment details for this security update, go to the following article in the Microsoft Knowledge Base:

20180814 Security update deployment information: August 14, 2018

Update removal information

Note We do not recommend that you remove any security update. To remove this update, use the Programs and Features item in Control Panel.

Update restart information

This update does not require a system restart after you apply it unless files that are being updated are locked or are being used.

Update replacement information

This update does not replace any previously released update.

File information

File hash

File name

SHA1 hash

SHA256 hash

Windows8.1-KB4344166-arm.msu

1F381AD49A428705B13FC2B3F552427E340311CE

A7A495B4140102808FFC58CD2194F1B2B5FCBB337CCC1E558FD66FFDE912CEA6

Windows8.1-KB4344166-x64.msu

CCC4D1BA7D8288B04FBFD22BC97FC5734B38E5F6

D56A3821F43F498AB58C952FE392F2147849BEC07B93E8F4D241473B2F6220FD

Windows8.1-KB4344166-x86.msu

D6D7F4CC9DB889A2559F75750F016E640B8F992F

6D5161C0C0BEC1CA26253756C214188C5D4F8A6B39DDA5AF2CD845EF56917406


File attributes

The English (United States) version of this update installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.

For all supported x86-based systems

File name

File version

File size

Date

Time

system.dll

4.7.3151.0

3,555,872

10-Jul-2018

06:53

mscorlib.dll

4.7.3133.0

5,638,272

25-Jul-2018

02:50

normidna.nlp

59,342

02-Nov-2017

02:14

normnfc.nlp

47,076

02-Nov-2017

02:14

normnfd.nlp

40,566

02-Nov-2017

02:14

normnfkc.nlp

67,808

02-Nov-2017

02:14

normnfkd.nlp

61,718

02-Nov-2017

02:14

clrjit.dll

4.7.3133.0

524,288

25-Jul-2018

02:50

clr.dll

4.7.3133.0

7,249,400

25-Jul-2018

02:50

mscordacwks.dll

4.7.3133.0

1,345,992

25-Jul-2018

02:50

mscordbi.dll

4.7.3133.0

1,170,440

25-Jul-2018

02:50

mscorlib.ni.dll

4.7.3133.0

20,528,720

25-Jul-2018

02:50

msvcp120_clr0400.dll

12.0.52519.0

485,576

11-May-2018

01:43

msvcr120_clr0400.dll

12.0.52519.0

987,840

11-May-2018

01:43

peverify.dll

4.7.3133.0

189,960

25-Jul-2018

02:50

sos.dll

4.7.3133.0

744,952

25-Jul-2018

02:50

For all supported x64-based systems

File name

File version

File size

Date

Time

mscorlib.dll

4.7.3133.0

5,420,992

25-Jul-2018

02:09

normidna.nlp

59,342

02-Nov-2017

02:14

normnfc.nlp

47,076

02-Nov-2017

02:14

normnfd.nlp

40,566

02-Nov-2017

02:14

normnfkc.nlp

67,808

02-Nov-2017

02:14

normnfkd.nlp

61,718

02-Nov-2017

02:14

clrjit.dll

4.7.3133.0

1,227,192

25-Jul-2018

02:09

clr.dll

4.7.3133.0

10,378,664

25-Jul-2018

02:09

compatjit.dll

4.7.3133.0

1,262,528

25-Jul-2018

02:09

mscordacwks.dll

4.7.3133.0

1,843,656

25-Jul-2018

02:09

mscordbi.dll

4.7.3133.0

1,625,024

25-Jul-2018

02:09

mscorlib.ni.dll

4.7.3133.0

22,590,008

25-Jul-2018

02:50

msvcp120_clr0400.dll

12.0.52519.0

690,008

11-May-2018

01:43

msvcr120_clr0400.dll

12.0.52519.0

993,632

11-May-2018

01:43

peverify.dll

4.7.3133.0

263,104

25-Jul-2018

02:09

sos.dll

4.7.3133.0

874,920

25-Jul-2018

02:09

system.dll

4.7.3151.0

3,555,872

10-Jul-2018

06:53

system.dll

4.7.3151.0

3,555,872

10-Jul-2018

06:53

mscorlib.dll

4.7.3133.0

5,638,272

25-Jul-2018

02:50

normidna.nlp

59,342

02-Nov-2017

02:14

normnfc.nlp

47,076

02-Nov-2017

02:14

normnfd.nlp

40,566

02-Nov-2017

02:14

normnfkc.nlp

67,808

02-Nov-2017

02:14

normnfkd.nlp

61,718

02-Nov-2017

02:14

clrjit.dll

4.7.3133.0

524,288

25-Jul-2018

02:50

clr.dll

4.7.3133.0

7,249,400

25-Jul-2018

02:50

mscordacwks.dll

4.7.3133.0

1,345,992

25-Jul-2018

02:50

mscordbi.dll

4.7.3133.0

1,170,440

25-Jul-2018

02:50

mscorlib.ni.dll

4.7.3133.0

20,528,720

25-Jul-2018

02:50

msvcp120_clr0400.dll

12.0.52519.0

485,576

11-May-2018

01:43

msvcr120_clr0400.dll

12.0.52519.0

987,840

11-May-2018

01:43

peverify.dll

4.7.3133.0

189,960

25-Jul-2018

02:50

sos.dll

4.7.3133.0

744,952

25-Jul-2018

02:50

For all supported ARM-based systems

File name

File version

File size

Date

Time

mscorlib.dll

4.7.3133.0

5,639,048

25-Jul-2018

02:09

normidna.nlp

59,342

02-Nov-2017

02:14

normnfc.nlp

47,076

02-Nov-2017

02:14

normnfd.nlp

40,566

02-Nov-2017

02:14

normnfkc.nlp

67,808

02-Nov-2017

02:14

normnfkd.nlp

61,718

02-Nov-2017

02:14

clrjit.dll

4.7.3133.0

686,976

25-Jul-2018

02:09

clr.dll

4.7.3133.0

6,759,800

25-Jul-2018

02:09

mscordacwks.dll

4.7.3133.0

1,296,792

25-Jul-2018

02:09

mscordbi.dll

4.7.3133.0

1,131,920

25-Jul-2018

02:09

mscorlib.ni.dll

4.7.3133.0

20,717,104

25-Jul-2018

02:50

msvcp120_clr0400.dll

12.0.52242.36242

602,080

11-May-2018

01:43

msvcr120_clr0400.dll

12.0.52242.36242

634,336

11-May-2018

01:43

sos.dll

4.7.3133.0

648,568

25-Jul-2018

02:09

system.dll

4.7.3151.0

3,555,872

10-Jul-2018

06:53

How to obtain help and support for this security update

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