Summary
This security update resolves vulnerabilities in Microsoft Windows. The vulnerability could allow information disclosure if a user views specially crafted PDF content online or opens a specially crafted PDF document. To learn more about the vulnerability, see Microsoft Security Bulletin MS16-115.
More Information
Important
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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.
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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.
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3184943 MS16-115: Description of the security update for security update for Microsoft Windows PDF Library: September 13, 2016
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3185611 Cumulative update for Windows 10: September 13, 2016
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3185614 Cumulative Update for Windows 10 1511 (TH2): Sep 13, 2016
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3189866 Cumulative update for Windows 10 Version 1607: September 13, 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, seeGet security updates automatically. Note For Windows RT 8.1, this update is available through Windows Update only.
Method 2: Microsoft Update Catalog
To get the stand-alone package for this update, go to the Microsoft Update Catalog website.
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 MS16-115 that corresponds to the version of Windows that you are running.
More Information
Windows 8.1 (all editions)Reference tableThe following table contains the security update information for this software.
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Security update file name |
For all supported 32-bit editions of Windows 8.1:Windows8.1-KB3184943-x86.msu |
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For all supported x64-based editions of Windows 8.1:Windows8.1-KB3184943-x64.msu |
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Installation switches |
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Restart requirement |
In some cases, this update does not require a system restart. If the required files are being used, this update will require a system restart. If this behavior occurs, you receive a message that advises you to restart your system. |
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Removal information |
To uninstall an update that is installed by WUSA, use the /Uninstall setup switch or click Control Panel, click System and Security, and then click Windows Update. Under See also, click Installed updates, and then select from the list of updates. |
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File information |
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Registry key verification |
Note This update does not add a registry key to validate its installation. |
Windows Server 2012 and Windows Server 2012 R2 (all editions)Reference tableThe following table contains the security update information for this software.
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Security update file name |
For all supported editions of Windows Server 2012:Windows8-RT-KB3184943-x64.msu |
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For all supported editions of Windows Server 2012 R2:Windows8.1-KB3184943-x64.msu |
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Installation switches |
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Restart requirement |
In some cases, this update does not require a system restart. If the required files are being used, this update will require a system restart. If this behavior occurs, you receive a message that advises you to restart your system. |
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Removal information |
To uninstall an update that is installed by WUSA, use the /Uninstall setup switch or click Control Panel, click System and Security, and then click Windows Update. Under See also, click Installed updates, and then select from the list of updates. |
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File information |
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Registry key verification |
Note This update does not add a registry key to validate its installation. |
Windows 10 (all editions)Reference tableThe following table contains the security update information for this software.
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Security update file name |
For all supported 32-bit editions of Windows 10:Windows10.0-KB3185611-x86.msu |
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For all supported x64-based editions of Windows 10:Windows10.0-KB3185611-x64.msu |
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For all supported 32-bit editions of Windows 10 Version 1511:Windows10.0-KB3185614-x86.msu |
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For all supported x64-based editions of Windows 10 Version 1511:Windows10.0-KB3185614-x64.msu |
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For all supported 32-bit editions of Windows 10 Version 1607:Windows10.0-KB3189866-x86.msu |
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For all supported x64-based editions of Windows 10 Version 1607:Windows10.0-KB3189866-x64.msu |
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Installation switches |
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Restart requirement |
You must restart the system after you apply this security update. |
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Removal information |
To uninstall an update that is installed by WUSA, use the /Uninstall setup switch or click Control Panel, click System and Security, and then click Windows Update. Under See also, click Installed updates, and then select from the list of updates. |
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File information |
See Microsoft Knowledge Base Article 3185611See Microsoft Knowledge Base Article 3185614See Microsoft Knowledge Base Article 3189866 |
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Registry key verification |
Note This update does not add a registry key to validate its installation. |
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
