Description of the security update for Office 2016: May 8, 2018

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 ADV170017.

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

Be aware that the update in the Microsoft Download Center applies to the Microsoft Installer (.msi)-based edition of Office 2016. It doesn't apply to the Office 2016 Click-to-Run editions, such as Microsoft Office 365 Home (see Determining your Office version).

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: May 8, 2018.

Security update replacement information

This security update replaces the previously released update KB 4011185.

File hash information

Package name Package hash SHA 1 Package hash SHA 2
osetup2016-kb4011239-fullfile-x64-glb.exe 298287B288658981F8413ACB0F55EAAA7A71F332 16611A86FE96406CD65DC3D798889ADECB1183720E4B0BE4467D81F43D3D19FC
osetup2016-kb4011239-fullfile-x86-glb.exe 0DE1CBC5CA2013711C693F1E6F9ACE77C8C3C4AB 41E3C57CD87EE4F65539C996108362274818AA845992A0D39B4AB64268220DA7

File information

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 together 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 x86-based versions of Office 2016

File identifier File name File version File size Date Time
osetup.dll osetup.dll 16.0.4690.1000 9857720 11-Apr-18 04:10

For all supported x64-based versions of Office 2016

File identifier File name File version File size Date Time
osetup.dll osetup.dll 16.0.4690.1000 12370616 11-Apr-18 04:13

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