Description of the security update for Office 2016: June 13, 2017

Applies to: Office Professional Plus 2016Office Professional 2016Office Standard 2016


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-2017-8509.

Note To apply this security update, you must have the release version of Office 2016 installed on the computer.

Improvements and fixes

This security update contains improvements and fixes for the following nonsecurity issue:
  • Increases the number of retries when trying to connect to a host in Microsoft Outlook 2016. By default, WinHTTP will try six IP addresses (one initial attempt and five retries) when trying to establish a connection to a host. If Outlook 2016 tries more than six IP addresses, the connection will fail. This is particularly problematic on networks that have intermittent IPv6 connectivity problems. Increasing the number of retries may allow the connection to succeed with IPv4 addresses. To enable this feature, see KB3178716 for more information.

How to get and install the update

Method 1: Microsoft Update

Method 2: Microsoft Update Catalog

Method 3: Microsoft Download Center

More Information

Security update deployment information

For deployment information about this update, see security update deployment information: June 13, 2017.

Security update replacement information

This security update does not replace any previously released update.

File hash information

Package Name Package Hash SHA 1 Package Hash SHA 2
msodll202016-kb3178667-fullfile-x86-glb.exe DA58D21C6030CFD0BA0F56FAAC82D858757B8016 1C880ADC98566C6275B441AF335B908912DF0390136B081F587502AD7E41389B
msodll202016-kb3178667-fullfile-x64-glb.exe 6AD49BC174A182F8317142FA6045D6B729FDC46A FB020808A6333588EA86AE01C54F0E13AE938B600FC452CC4BD3314B896BBAED

File information

How to get help and support for this security update

Help for installing updates: Windows Update FAQ

Security solutions for IT professionals:
TechNet 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 Core: Office User Voice portal