Summary
This security update resolves a vulnerability in Microsoft Windows. The vulnerability could allow information disclosure when Universal Outlook fails to establish a secure connection.
To learn more about this vulnerability, see Microsoft Security Bulletin MS16-103.
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Important
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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.
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.
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 MS16-103 that corresponds to the version of Windows that you are running.
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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: |
For all supported x64-based editions of Windows 10: |
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For all supported 32-bit editions of Windows 10 Version 1511: |
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For all supported x64-based editions of Windows 10 Version 1511: |
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Installation switches |
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Restart requirement |
You must restart the system after you apply this security update. |
Removal information |
To uninstall an update that is installed by WUSA, use the /Uninstall setup switch or click Control Panel, click System and Security. Under Windows Update, click View installed updates, and then select from the list of updates. |
File information |
See Microsoft Knowledge Base article 3176492 |
Registry key verification |
Registry keys do not exist to validate the presence of these updates. |
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