Description of the security update for Office 2016: May 14, 2019

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-2019-0945 and Microsoft Common Vulnerabilities and Exposures CVE-2019-0946.

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 What version of Office am I using?).

How to get and install the update

Method 1: Microsoft 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 Windows Update: FAQ.

Method 2: Microsoft Update Catalog

To get the standalone package for this update, go to the Microsoft Update Catalog website.

Method 3: Microsoft Download Center

You can get the standalone 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 14, 2019.

Security update replacement information

This security update replaces previously released security update 4462213.

File hash information

File name SHA1 hash SHA256 hash
ace2016-kb4464551-fullfile-x86-glb.exe E7BABD20DB1ADA5053CEB724F945AFBD8058F546 6EB38BFAD2F6F01F611E99EE1117D34A2DF364ED5079BDBA97392ECA2B64D766
ace2016-kb4464551-fullfile-x64-glb.exe 3DF8508F3DC3AC985F08C14BFFD80AEE8BA1819D 6C1AEA7D4C4CC498773565E0DA9F3A220D82614378F6FA45CB0019BFC18227DB

File information

The English (United States) version of this software update installs files that have the 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: Protect yourself online

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

Local support according to your country: International Support