Summary

Microsoft has released a Microsoft security advisory about this issue for IT professionals. The security advisory contains additional security-related information. To learn more about the vulnerability, see https://technet.microsoft.com/security/advisory/3074162

More Information

Important

  • All future security and non-security updates for Windows 8.1 and Windows Server 2012 R2 require update 2919355 to be installed. We recommend that you install update 2919355 on your 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.

For more information about the Malicious Software Removal Tool (MSRT), click the following article number to view the article in the Microsoft Knowledge Base:

890830 The Microsoft Windows Malicious Software Removal Tool helps remove specific, prevalent malicious software from computers that are running supported versions of 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.

Method 2: Microsoft Download Center

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 following link to download the file for all Windows versions:

Download Download (3074162)

More Information

File name

SHA1 hash

SHA256 hash

Windows-KB890830-V5.26.exe

2731AD858C623A9772244B0838ED7F3F212A6B9D

05B6F1BF69760E73AC5FB760D217B8F484F20C9209667AD2CC01D0850528042F

Windows-KB890830-x64-V5.26.exe

580E9F53164AE0852F5414DADFB22A6C2B03C911

9C12D0F141C8142AA3EF5E6D06AE4D608B4F1354A533C36559D0F72D354A7C7D


The English (United States) version of this software update installs files that have the attributes that are listed in the following tables. The dates and times for these files are listed in Coordinated Universal Time (UTC). The dates and times for these files on your local computer are displayed in your local time and with your current daylight saving time (DST) bias. Additionally, the dates and times may change when you perform certain operations on the files.

For all supported x64-based systems

File name

File version

File size

Date

Time

Platform

Mrt.exe

5.26.11603.0

130,666,664

02-Jul-2015

04:00

x64

Mrtstub.exe

5.26.11603.0

93,920

02-Jul-2015

03:46

x64

For all supported x86-based systems

File name

File version

File size

Date

Time

Platform

Mrt.exe

5.26.11603.0

127,403,696

02-Jul-2015

03:51

x86

Mrtstub.exe

5.26.11603.0

89,816

02-Jul-2015

03:49

x86


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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