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Summary

This security update resolves a vulnerability in Microsoft Windows. The vulnerability could allow information disclosure if a USB disk mounted over Remote Desktop Protocol (RDP) via Microsoft RemoteFX is not correctly tied to the session of the mounting user.



To learn more about the vulnerability, see Microsoft Security Bulletin MS16-067.

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.

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 MS16-067 that corresponds to the version of Windows that you are running.

More Information

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-KB3155784-x86.msu


For all supported x64-based editions of Windows 8.1:
Windows8.1-KB3155784-x64.msu

Installation switches

See Microsoft Knowledge Base Article 934307

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.

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 3155784

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-RT-KB3155784-x64.msu


For all supported editions of Windows Server 2012 R2:
Windows8.1-KB3155784-x64.msu

Installation switches

See Microsoft Knowledge Base Article 934307

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.

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 3155784

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

The update is available via Windows Update only.

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.

Removal Information

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

File Information

See Microsoft Knowledge Base Article 3155784


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

File Information

File name

SHA1 hash

SHA256 hash

Windows8-RT-KB3155784-x64.msu

8B008FCA6133BFB97944F32C46CA30FA404FBD8E

B35A1157CB4FD0FC04C7AE5F3D4AD29D73D2B997E44445783EE8AD97C0F994C6

Windows8.1-KB3155784-x64.msu

2A5C14E67FC1C00A974E2B1B892C15132B780F59

40060D933DC793C9FD50FB9A314B1C24C35FBEDE386B9CDF187F57467614F171

Windows8.1-KB3155784-x86.msu

3DCC7DE760267BFD0430B39FC41F8FA0B5F27CA4

DD8C57FC39145A9DE33DEBBA067109E4FEDCE7C7DE705D5FED89F6074CEE7778


The English (United States) version of this software update installs files that have the attributes that are listed in the following tables.

Windows Server 2012 file information

Notes

  • The files that apply to a specific product, milestone (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table:

    Version

    Product

    Milestone

    Service branch

    6.2.920 0.17xxx

    Windows 8, Windows RT, or Windows Server 2012

    RTM

    GDR

    6.2.920 0.21xxx

    Windows 8, Windows RT, or Windows Server 2012

    RTM

    LDR

  • GDR service branches contain only those fixes that are widely released to address widespread, critical issues. LDR service branches contain hotfixes in addition to widely released fixes.

  • The MANIFEST files (.manifest) and MUM files (.mum) that are installed are not listed.

For all supported x64-based versions

File name

File version

File size

Date

Time

Platform

Volmgr.sys

6.2.9200.21831

83,296

09-Apr-2016

18:03

x64

Windows 8.1 and Windows Server 2012 R2 file information

Notes

  • The files that apply to a specific product, milestone (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table:

    Version

    Product

    Milestone

    Service branch

    6.3.960 0.17xxx

    Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2

    RTM

    GDR

  • GDR service branches contain only those fixes that are widely released to address widespread, critical issues. LDR service branches contain hotfixes in addition to widely released fixes.

  • The MANIFEST files (.manifest) and MUM files (.mum) that are installed are not listed.

For all supported x64-based versions

File name

File version

File size

Date

Time

Platform

Volmgr.sys

6.3.9600.18302

74,584

11-Apr-2016

06:21

x64

For all supported x86-based versions

File name

File version

File size

Date

Time

Platform

Volmgr.sys

6.3.9600.18302

58,712

11-Apr-2016

06:25

x86


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