Description of the security update for Outlook 2013: October 10, 2017

Applies to: Microsoft Office 2013 Service Pack 1


This security update resolves vulnerabilities in Microsoft Office that could allow remote code execution if a user opens a specially crafted Office file. To learn more about these vulnerabilities, see Microsoft Common Vulnerabilities and Exposures CVE-2017-11774 and Microsoft Common Vulnerabilities and Exposures CVE-2017-11776.

Note To apply this security update, you must have the release version of Service Pack 1 for Microsoft Office 2013 installed on the computer.

Be aware that the update in the Microsoft Download Center applies to the Microsoft Installer (.msi)-based edition of Office 2013. It doesn't apply to the Office 2013 Click-to-Run editions, such as Microsoft Office 365 Home. (See Determining your Office version.)

Improvements and fixes

This security update contains the following improvements and fixes:
  • When you use the Select All button to select all items in the Recover Deleted Items dialog box in a non-English version of Microsoft Outlook 2013, no items are selected.
  • Outlook will not connect by using MAPI/HTTP if certain HTTP headers are received by the client that have unexpected type casing.

  • When you try to connect to the address book after a Microsoft Exchange failover in Outlook 2013, you receive the following error message:

  • You experience an error occasionally when you try to access the address book.

  • When you change the location of a meeting and select to update the location automatically in Outlook 2013, the displayed location isn't updated for the meeting.

  • Improves some translation for the Russian 32-bit version of Outlook 2013.

How to get and install the update

Method 1: Microsoft Update

This update is available from Microsoft Update. When you turn on automatic updating, this update will be downloaded and installed automatically. For more information about how to get security updates automatically, see Windows Update: FAQ.

Method 2: Microsoft Update Catalog

To get the stand-alone package for this update, go to the Microsoft Update Catalog website.

Method 3: Microsoft Download Center

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

More Information

Security update deployment information

For deployment information about this update, see security update deployment information: October 10, 2017.

Security update replacement information

This security update replaces previously released security update KB 4011090.

File hash information

Package Name Package Hash SHA 1 Package Hash SHA 2
outlook2013-kb4011178-fullfile-x64-glb.exe BE12EB6CE997BEDD487499BE03D8D4E64146E7C5 215FD2B0459E651A05BE5032532D000ABF398E5F392D65EBF6EFE861C0659A40
outlook2013-kb4011178-fullfile-x86-glb.exe 364602710E01704EF87F23E18A0AB7753E1082FA 3E91D0691DF3AC90620046EEE69541AB6A7A2B84FBA7A6830AF84F8EA29473EA

File information

The English version of this security update has the file attributes (or later file attributes) that are listed in the following table. 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 together with your current daylight-saving time (DST) bias. Additionally, the dates and times may change when you perform certain operations on the files.

How to get help and support for this security update

Help for installing updates: Windows Update FAQ

Security solutions for IT professionals: Security Support and Troubleshooting

Help for protecting your Windows-based computer from viruses and malware: Microsoft Secure

Local support according to your country: International Support

Propose a feature or provide feedback on Office: Office User Voice portal

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