Description of the security update for Office 2016: May 9, 2017

Summary

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-2017-0281.

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

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.

• Download the security update KB3191863 for the 32-bit version of Office 2016
• Download the security update KB3191863 for the 64-bit version of Office 2016

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More Information

Security update deployment information

For deployment information about this update, see security update deployment information: May 9, 2017.

Security update replacement information

This security update doesn’t replace any previously released update.

File hash information

Package Name	Package Hash SHA 1	Package Hash SHA 2
msodll99l2016-kb3191863-fullfile-x86-glb.exe	D9E83E5F29F75C3923576B28811239A44D35609E	77BD7DF36699AF219F4572D94BE62BFBC9DF306E00FD7D66FCD934E3AEAEBE22
msodll99l2016-kb3191863-fullfile-x64-glb.exe	0448372591D45C2CEC31C301D7B84C70EBF6B812	371CC5DB9906997D141B57621E1456E27588B5886F7CF7715B54A4E17817D80A

File information

The English version of this security update has the file attributes (or later file attributes) that are listed in the following table.For all supported x86-based versions of Office 2016| File identifier| File name| File version| File size| Date| Time
—|—|—|—|—|—
mso99lres.dll| mso99lres.dll| 16.0.4519.1000| 9501440| 11-Apr-17| 12:36
mso99lres.dll.x86| mso99lres.dll| 16.0.4519.1000| 9501440| 11-Apr-17| 12:44
mso99lwin32client.dll.x64| mso99lwin32client.dll| 16.0.4534.1000| 8157440| 12-Apr-17| 03:20
xlsrv.ecs.mso99lwin32client.dll| mso99lwin32client.dll| 16.0.4534.1000| 8157440| |
mso99lwin32client.dll.x86| mso99lwin32client.dll| 16.0.4534.1000| 5861120| 12-Apr-17| 03:18

For all supported x64-based versions of Office 2016File identifier	File name	File version	File size	Date	Time
conversion.office.mso99lres.dll	mso99lres.dll	16.0.4519.1000	9501440	11-Apr-17	12:38
mso99lres.dll	mso99lres.dll	16.0.4519.1000	9501440	11-Apr-17	12:36
ppt.conversion.mso99lres.dll	mso99lres.dll	16.0.4519.1000	9501440
ppt.edit.mso99lres.dll	mso99lres.dll	16.0.4519.1000	9501440
wac.office.mso99lres.dll	mso99lres.dll	16.0.4519.1000	9501440
mso99lres.dll	mso99lres.dll	16.0.4519.1000	9501440	11-Apr-17	12:36
mso99lres.dll.x86	mso99lres.dll	16.0.4519.1000	9501440	11-Apr-17	12:44
mso99lwin32client.dll.x64	mso99lwin32client.dll	16.0.4534.1000	8157440	12-Apr-17	03:20
xlsrv.ecs.mso99lwin32client.dll	mso99lwin32client.dll	16.0.4534.1000	8157440
mso99lwin32client.dll.x86	mso99lwin32client.dll	16.0.4534.1000	5861120	12-Apr-17	03:18

How to get help and support for this security update

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 SupportPropose a feature or provide feedback on Office Core: Office User Voice portal