Explorer.exe may crash when you play back an MPEG-4 file in Windows 8.1 or Windows RT 8.1

This article describes an issue that occurs when you play back an MPEG-4 file in Windows 8.1 or Windows RT 8.1. Before you install this update, see the Prerequisites section.
Symptoms
This issue occurs when the UTC time (Coordinated Universal Time) offset of the MPEG-4 file is zero in the time zone information of the media metadata.
How to get this update
Important 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.

Method 1: Windows Update

This update is provided as a Recommended update on Windows Update. For more information on how to run Windows Update, see How to get an update through Windows Update.

Method 2: Microsoft Download Center

The following files are available for download from the Microsoft Download Center:
Operating systemUpdate
All supported x86-based versions of Windows 8.1DownloadDownload the package now.
All supported x64-based versions of Windows 8.1 DownloadDownload the package now.
All supported x64-based versions of Windows Server 2012 R2DownloadDownload the package now.
Note The update for Windows RT 8.1 can be got only from Windows Update.

For more information about how to download Microsoft support files, select the following article number to view the article in the Microsoft Knowledge Base:
119591 How to obtain Microsoft support files from online services
Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.
Update detail information

Prerequisites

To install this update, you should first install April 2014, update rollup for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 (2919355) in Windows 8.1 or Windows Server 2012 R2.

Registry information

To apply this update, you don't have to make any changes to the registry.

Restart requirement

You may have to restart the computer after you apply this update.

Update replacement information

This update doesn't replace a previously released update.
Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
References
Learn about the terminology that Microsoft uses to describe software updates.
File Information
The English (United States) version of this software update installs files that have the attributes that are listed in the following tables.

Windows 8.1, Windows RT 8.1 and Windows Server 2012 R2

Notes The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed in the "Additional file information" section. MUM, MANIFEST, and the associated security catalog (.cat) files, are very important to maintain the state of the updated components. The security catalog files, for which the attributes are not listed, are signed with a Microsoft digital signature.
x86 Windows 8.1
File nameFile versionFile sizeDateTimePlatform
Mfmp4srcsnk.dll12.0.9600.18204786,15221-Jan-201618:42x86
Windows RT 8.1
File nameFile versionFile sizeDateTimePlatform
Mfmp4srcsnk.dll12.0.9600.18204660,16821-Jan-201617:45Not applicable
x64 Windows 8.1 and Windows Server 2012 R2
File nameFile versionFile sizeDateTimePlatform
Mfmp4srcsnk.dll12.0.9600.18204952,92821-Jan-201619:35x64
Mfmp4srcsnk.dll12.0.9600.18204786,15221-Jan-201618:42x86

Additional file information

x86 Windows 8.1
File propertyValue
File nameUpdate.mum
File versionNot applicable
File size1,579
Date (UTC)22-Jan-2016
Time (UTC)00:38
PlatformNot applicable
File nameX86_3ce33ba66457ff5099a800c4d27d2afd_31bf3856ad364e35_6.3.9600.18204_none_76be8bdc714e7969.manifest
File versionNot applicable
File size699
Date (UTC)22-Jan-2016
Time (UTC)00:38
PlatformNot applicable
File nameX86_microsoft-windows-mfmp4srcsnk_31bf3856ad364e35_6.3.9600.18204_none_9ba60b70c96e4e9b.manifest
File versionNot applicable
File size58,808
Date (UTC)21-Jan-2016
Time (UTC)18:48
PlatformNot applicable
Windows RT 8.1
File propertyValue
File nameArm_7421ccdaf547785fa8b0717fed0b7a43_31bf3856ad364e35_6.3.9600.18204_none_5e768b7f6479a837.manifest
File versionNot applicable
File size699
Date (UTC)22-Jan-2016
Time (UTC)00:38
PlatformNot applicable
File nameArm_microsoft-windows-mfmp4srcsnk_31bf3856ad364e35_6.3.9600.18204_none_9ba87dc8c96b6d61.manifest
File versionNot applicable
File size58,808
Date (UTC)21-Jan-2016
Time (UTC)17:50
PlatformNot applicable
File nameUpdate.mum
File versionNot applicable
File size1,579
Date (UTC)22-Jan-2016
Time (UTC)00:38
PlatformNot applicable
x64 Windows 8.1 and Windows Server 2012 R2
File propertyValue
File nameAmd64_34add318ea2ee4e9e6019e94c8ebeb34_31bf3856ad364e35_6.3.9600.18204_none_a6e8f0ce237d8861.manifest
File versionNot applicable
File size1,048
Date (UTC)22-Jan-2016
Time (UTC)00:38
PlatformNot applicable
File nameAmd64_microsoft-windows-mfmp4srcsnk_31bf3856ad364e35_6.3.9600.18204_none_f7c4a6f481cbbfd1.manifest
File versionNot applicable
File size58,812
Date (UTC)21-Jan-2016
Time (UTC)19:41
PlatformNot applicable
File nameUpdate.mum
File versionNot applicable
File size1,588
Date (UTC)22-Jan-2016
Time (UTC)00:38
PlatformNot applicable
File nameWow64_microsoft-windows-mfmp4srcsnk_31bf3856ad364e35_6.3.9600.18204_none_02195146b62c81cc.manifest
File versionNot applicable
File size20,724
Date (UTC)21-Jan-2016
Time (UTC)18:48
PlatformNot applicable
Properties

Article ID: 3136019 - Last Review: 04/12/2016 20:16:00 - Revision: 2.0

Windows Server 2012 R2 Datacenter, Windows Server 2012 R2 Standard, Windows Server 2012 R2 Essentials, Windows Server 2012 R2 Foundation, Windows 8.1 Enterprise, Windows 8.1 Pro, Windows 8.1, Windows RT 8.1

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