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Summary

This update resolves vulnerabilities in Microsoft .NET Framework. The vulnerabilities could allow remote code execution if a user visits a specially crafted website or opens a specially crafted document. This update addresses the vulnerabilities by correcting how the Windows font library handles embedded fonts. To learn more about this vulnerability, see Microsoft Security Bulletin MS16-120.

Important

  • All future security and nonsecurity updates for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 require update 2919355 to be installed. We recommend that you install update 2919355 on your Windows RT 8.1-based, Windows 8.1-based, or Windows Server 2012 R2-based computer so that you receive future updates.

  • If you install a language pack after you install this update, you must reinstall this update. Therefore, we recommend that you install any language packs that you need before you install this update. For more information, see Add language packs to Windows.

How to obtain and install this update

Method 1: Windows Update

This update is available through Windows Update. When you turn on automatic updating, this update will be downloaded and installed automatically. For more information about how to get security updates automatically, see the "Turn on automatic updating in the Control Panel" section of this Safety & Security Center article.

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

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. If WSUS opens a browser window in which you are prompted to install an ActiveX control, install the control to continue.Note After the ActiveX control is installed, the Microsoft Update Catalog screen opens.

  5. Enter 3188743 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. When you have selected all the packages that you require, click View Basket.

  8. Click Import to import the packages into your WSUS server.

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

The updates are now available for installation through WSUS.

Update deployment informationFor deployment information about this update, see Microsoft Knowledge Base Article 3192884.

Update removal informationNote 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 informationThis 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 informationThis update does not replace any previously released update.

File hash

File name

SHA1 hash

SHA256 hash

Windows8.1-KB3188743-x86.msu

78AB63B7BA3D42C9D74C3FF60F601AFCD771BC32

4C93F575F52E7EB3F8E0029A373F55C702C9354A87EA8DDCEC19C92A0574F0B2

Windows8.1-KB3188743-x64.msu

B8D5309E5FF9EE03720237D41E61849CAC32C6DF

090AA46BAF42DCAE8568DF349C058D6FC82042E41BB21DA3C553637D29012CCB

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 versions of systems

File name

File version

File size

Date

Time

presentationframework.dll

3.0.6920.8720

5,283,840

08-Sep-2016

13:14

reachframework.dll

3.0.6920.8720

532,480

08-Sep-2016

13:14

windowsbase.dll

3.0.6920.8720

1,253,376

08-Sep-2016

13:14

presentationcore.dll

3.0.6920.8720

4,222,976

08-Sep-2016

13:14

presentationfontcache.exe.config

161

20-Aug-2015

13:24

wpfgfx_v0300.dll

3.0.6920.8720

1,737,888

08-Sep-2016

13:14

system.printing.dll

3.0.6920.8720

372,736

08-Sep-2016

13:14

penimc.dll

3.0.6920.8720

68,752

08-Sep-2016

13:14

presentationframework.dll

3.0.6920.8720

5,283,840

08-Sep-2016

13:14

presentationhostdll.dll

3.0.6920.8720

131,248

08-Sep-2016

13:14

reachframework.dll

3.0.6920.8720

532,480

08-Sep-2016

13:14

windowsbase.dll

3.0.6920.8720

1,253,376

08-Sep-2016

13:14

For all supported x64-based versions of systems

File name

File version

File size

Date

Time

presentationcore.dll

3.0.6920.8720

4,006,400

08-Sep-2016

13:13

presentationfontcache.exe.config

161

22-Aug-2015

13:27

wpfgfx_v0300.dll

3.0.6920.8720

2,256,032

08-Sep-2016

13:13

system.printing.dll

3.0.6920.8720

358,400

08-Sep-2016

13:13

penimc.dll

3.0.6920.8720

85,648

08-Sep-2016

13:13

presentationframework.dll

3.0.6920.8720

4,640,768

08-Sep-2016

13:13

presentationhostdll.dll

3.0.6920.8720

172,208

08-Sep-2016

13:13

reachframework.dll

3.0.6920.8720

532,480

08-Sep-2016

13:13

windowsbase.dll

3.0.6920.8720

1,114,112

08-Sep-2016

13:13

presentationframework.dll

3.0.6920.8720

5,283,840

08-Sep-2016

13:14

reachframework.dll

3.0.6920.8720

532,480

08-Sep-2016

13:14

windowsbase.dll

3.0.6920.8720

1,253,376

08-Sep-2016

13:14

presentationcore.dll

3.0.6920.8720

4,222,976

08-Sep-2016

13:14

presentationfontcache.exe.config

161

20-Aug-2015

13:24

wpfgfx_v0300.dll

3.0.6920.8720

1,737,888

08-Sep-2016

13:14

system.printing.dll

3.0.6920.8720

372,736

08-Sep-2016

13:14

penimc.dll

3.0.6920.8720

68,752

08-Sep-2016

13:14

presentationframework.dll

3.0.6920.8720

5,283,840

08-Sep-2016

13:14

presentationhostdll.dll

3.0.6920.8720

131,248

08-Sep-2016

13:14

reachframework.dll

3.0.6920.8720

532,480

08-Sep-2016

13:14

windowsbase.dll

3.0.6920.8720

1,253,376

08-Sep-2016

13:14

Help for installing updates: Support for Microsoft UpdateSecurity solutions for IT professionals: TechNet Security Troubleshooting and SupportHelp for protecting your Windows-based computer from viruses and malware: Virus Solution and Security CenterLocal support according to your country: International Support

Applies toThis article applies to the following:

  • Microsoft .NET Framework 3.5 when used with:

    • Windows Server 2012 R2

    • Windows 8.1

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