Summary

This security update resolves vulnerabilities in Microsoft Windows. The vulnerabilities could allow remote code execution if a user opens specially crafted media content that is hosted on a website.


To learn more about the vulnerability, see Microsoft Security Bulletin MS16-027.

More Information

Important

  • All future security and non-security 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.

Additional information about this security update

The following articles contain additional information about this security update as it relates to individual product versions. The articles may contain known issue information.

  • 3138910 MS16-027: Description of the security update for Windows media: March 8, 2016

  • 3138962 MS16-027: Description of the security update for Windows media: March 8, 2016

  • 3140745 Cumulative Update for Windows 10: March 8, 2016

  • 3140768 Cumulative update for Windows 10 Version 1511 and Windows Server 2016 Technical Preview 4: March 8, 2016

How to obtain and install the 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 turn on automatic updating, see
Get security updates automatically.

Note For Windows RT 8.1, this update is available through Windows Update only.

You can obtain the stand-alone update package through the Microsoft Download Center. Follow the installation instructions on the download page to install the update.

Click the download link in Microsoft Security Bulletin MS16-027 that corresponds to the version of Windows that you are running.

More Information

Windows 7 (all editions)Reference Table

The following table contains the security update information for this software.

Security update file name

For all supported 32-bit editions of Windows 7:
Windows6.1-KB3138910-x86.msu
Windows6.1-KB3138962-x86.msu

For all supported x64-based editions of Windows 7:
Windows6.1-KB3138910-x64.msu
Windows6.1-KB3138962-x64.msu

Installation switches

See Microsoft Knowledge Base Article 934307

Restart requirement

In some cases, this update does not require a restart. If the required files are being used, this update will require a restart. If this behavior occurs, a message appears that advises you to restart.

Removal information

To uninstall an update installed by WUSA, use the /Uninstall setup switch or click Control Panel, click System and Security, and then under Windows Update, click View installed updates, and select from the list of updates.

File information

See Microsoft Knowledge Base Article 3138962
See Microsoft Knowledge Base Article 3138910

Registry key verification

Note A registry key does not exist to validate the presence of this update.

Windows Server 2008 R2 (all editions)Reference Table

The following table contains the security update information for this software.

Security update file name

For all supported x64-based editions of Windows Server 2008 R2:
Windows8.1-KB3138910-x86.msu
Windows8.1-KB3138962-x86.msu

Installation switches

See Microsoft Knowledge Base Article 934307

Restart requirement

In some cases, this update does not require a restart. If the required files are being used, this update will require a restart. If this behavior occurs, a message appears that advises you to restart.

Removal information

To uninstall an update installed by WUSA, use the /Uninstall setup switch or click Control Panel, click System and Security, and then under Windows Update, click View installed updates, and select from the list of updates.

File information

See Microsoft Knowledge Base Article 3138910
See Microsoft Knowledge Base Article 3138962

Registry key verification

Note A registry key does not exist to validate the presence of this update.

Windows 8.1 (all editions)Reference Table

The following table contains the security update information for this software.

Security update file name

For all supported 32-bit editions of Windows 8.1:
Windows8.1-KB3138910-x86.msu
Windows8.1-KB3138962-x86.msu

For all supported x64-based editions of Windows 8.1:
Windows8.1-KB3138910-x64.msu
Windows8.1-KB3138962-x64.msu

Installation switches

See Microsoft Knowledge Base Article 934307

Restart requirement

In some cases, this update does not require a restart. If the required files are being used, this update will require a restart. If this behavior occurs, a message appears that advises you to restart.

Removal information

To uninstall an update installed by WUSA, use the /Uninstall setup switch or click Control Panel, click System and Security, click Windows Update, and then under See also, click Installed updates and select from the list of updates.

File information

See Microsoft Knowledge Base Article 3138910
See Microsoft Knowledge Base Article 3138962

Registry key verification

Note A registry key does not exist to validate the presence of this update.

Windows Server 2012 and Windows Server 2012 R2 (all editions)Reference Table

The following table contains the security update information for this software.

Security update file name

For all supported editions of Windows Server 2012:
Windows8.1-KB3138910-x64.msu
Windows8.1-KB3138962-x64.msu

For all supported editions of Windows Server 2012 R2:
Windows8.1-KB3138910-x64.msu
Windows8.1-KB3138962-x64.msu

Installation switches

See Microsoft Knowledge Base Article 934307

Restart requirement

In some cases, this update does not require a restart. If the required files are being used, this update will require a restart. If this behavior occurs, a message appears that advises you to restart.

Removal information

To uninstall an update installed by WUSA, use the /Uninstall setup switch or click Control Panel, click System and Security, click Windows Update, and then under See also, click Installed updates and select from the list of updates.

File information

See Microsoft Knowledge Base Article 3138910
See Microsoft Knowledge Base Article 3138962

Registry key verification

Note A registry key does not exist to validate the presence of this update.

Windows RT 8.1 (all editions)Reference Table

The following table contains the security update information for this software.

Deployment

These updates are available via Windows Update only.

Restart Requirement

In some cases, this update does not require a restart. If the required files are being used, this update will require a restart. If this behavior occurs, a message appears that advises you to restart.

Removal Information

Click Control Panel, click System and Security, click Windows Update, and then under See also, click Installed updates and select from the list of updates.

File Information

See Microsoft Knowledge Base Article 3138910

Windows 10 (all editions)Reference Table

The following table contains the security update information for this software.

Security update file name

For all supported 32-bit editions of Windows 10:
Windows10.0-KB3140745-x86.msu

For all supported x64-based editions of Windows 10:
Windows10.0-KB3140745-x64.msu

For all supported 32-bit editions of Windows 10 Version 1511:
Windows10.0-KB3140768-x86.msu

For all supported x64-based editions of Windows 10 Version 1511:
Windows10.0-KB3140768-x64.msu

Installation switches

See Microsoft Knowledge Base Article 934307

Restart requirement

In some cases, this update does not require a restart. If the required files are being used, this update will require a restart. If this behavior occurs, a message appears that advises you to restart.

Removal information

To uninstall an update installed by WUSA, use the /Uninstall setup switch or click Control Panel, click System and Security, click Windows Update, and then under See also, click Installed updates and select from the list of updates.

File information

See Microsoft Knowledge Base Article 3140745
Microsoft Knowledge Base Article 3140768

Registry key verification

Note A registry key does not exist to validate the presence of this 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

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