MS16-039: Description of the security update for the .NET Framework 3.5 in Windows 8.1 and Windows Server 2012 R2: April 12, 2016

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Summary

This security update resolves vulnerabilities in the Microsoft .NET Framework. The vulnerabilities could allow remote code execution if a user opens a specially crafted document or visits a webpage that contains specially crafted embedded fonts. To learn more about this vulnerability, see Microsoft Security Bulletin MS16-039.

More Information

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.

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.

Method 2: Microsoft Download Center

You can obtain the stand-alone update package through the Microsoft Download Center. To install this update, follow the install instructions on the download page.

Download security update 3142045

Update deployment information

For deployment information about this update, see Microsoft Knowledge Base article 3148522.

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 replaces previously released update 3135991.

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File information

File hashPackage Name	Package Hash SHA 1	Package Hash SHA 2
Windows8.1-KB3142045-x64.msu	BAB36D6819B60ECE0FB3DC47187DDE613B80E4DD	3B0B57DC1CCC1679CC820D315B99280F185C6F7BA854E71F6DD733B615E443E4
Windows8.1-KB3142045-x86.msu	79259A24825268E3CA580823704DAC0BABEF3990	5AEA219F65706902AD0BB6024BF388ADC12E4298E82ADE891DEE5F44BF1D5AD9
File attributesThe 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 systemsFile name	File version	File size	Date	Time
presentationframework.dll	3.0.6920.8712	5,283,840	17-Mar-2016	13:16
reachframework.dll	3.0.6920.8712	532,480	17-Mar-2016	13:16
windowsbase.dll	3.0.6920.8712	1,253,376	17-Mar-2016	13:16
presentationcore.dll	3.0.6920.8712	4,222,976	17-Mar-2016	13:16
presentationfontcache.exe.config		161	20-Aug-2015	13:24
wpfgfx_v0300.dll	3.0.6920.8712	1,737,888	17-Mar-2016	13:16
system.printing.dll	3.0.6920.8712	372,736	17-Mar-2016	13:16
penimc.dll	3.0.6920.8712	68,752	17-Mar-2016	13:16
presentationframework.dll	3.0.6920.8712	5,283,840	17-Mar-2016	13:16
presentationhostdll.dll	3.0.6920.8712	131,240	17-Mar-2016	13:16
reachframework.dll	3.0.6920.8712	532,480	17-Mar-2016	13:16
windowsbase.dll	3.0.6920.8712	1,253,376	17-Mar-2016	13:16
For all supported x64-based versions of systemsFile name	File version	File size	Date	Time
—	—	—	—	—
presentationcore.dll	3.0.6920.8712	4,006,400	17-Mar-2016	13:18
presentationfontcache.exe.config		161	22-Aug-2015	13:27
wpfgfx_v0300.dll	3.0.6920.8712	2,256,032	17-Mar-2016	13:18
system.printing.dll	3.0.6920.8712	358,400	17-Mar-2016	13:18
penimc.dll	3.0.6920.8712	85,648	17-Mar-2016	13:18
presentationframework.dll	3.0.6920.8712	4,640,768	17-Mar-2016	13:18
presentationhostdll.dll	3.0.6920.8712	172,200	17-Mar-2016	13:18
reachframework.dll	3.0.6920.8712	532,480	17-Mar-2016	13:18
windowsbase.dll	3.0.6920.8712	1,114,112	17-Mar-2016	13:18
presentationframework.dll	3.0.6920.8712	5,283,840	17-Mar-2016	13:16
reachframework.dll	3.0.6920.8712	532,480	17-Mar-2016	13:16
windowsbase.dll	3.0.6920.8712	1,253,376	17-Mar-2016	13:16
presentationcore.dll	3.0.6920.8712	4,222,976	17-Mar-2016	13:16
presentationfontcache.exe.config		161	20-Aug-2015	13:24
wpfgfx_v0300.dll	3.0.6920.8712	1,737,888	17-Mar-2016	13:16
system.printing.dll	3.0.6920.8712	372,736	17-Mar-2016	13:16
penimc.dll	3.0.6920.8712	68,752	17-Mar-2016	13:16
presentationframework.dll	3.0.6920.8712	5,283,840	17-Mar-2016	13:16
presentationhostdll.dll	3.0.6920.8712	131,240	17-Mar-2016	13:16
reachframework.dll	3.0.6920.8712	532,480	17-Mar-2016	13:16
windowsbase.dll	3.0.6920.8712	1,253,376	17-Mar-2016	13:16

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How to obtain help and support for this security update

Help for installing updates: Support for Microsoft Update

Security solutions for IT professionals: TechNet Security Troubleshooting and Support

Help for protecting your Windows-based computer from viruses and malware: Virus Solution and Security Center

Local 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