This security update resolves an information disclosure vulnerability that exists when Microsoft Outlook improperly handles certain types of messages. To learn more about the information disclosure vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2019-0559.
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 improvements and fixes for the following nonsecurity issues:
After update KB 3118388 is applied, Office documents in the Public Folders are unexpectedly opened in the Protected View.
A "Blocked external content" warning for Secure/Multipurpose Internet Mail Extensions (S/MIME) email messages that have no external content is displayed in Outlook 2013.
This update adds support for directly importing .ics files that contain HTML bodies into an Outlook 2013 calendar. You no longer need to first convert the HTML body to Rich Text Format (RTF).
- Mail delivery rules stop working. When you try to open the Manage Rules and Alerts dialog box, you receive the following error message:
The operation failed because of a registry or installation problem. Restart Outlook and try again. If the problem persists, reinstall.
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 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.
Security update deployment information
For deployment information about this update, see security update deployment information: January 8, 2019.
Security update replacement information
This security update replaces previously released update KB 4461556.
File hash information
|File name||SHA1 hash||SHA256 hash|
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.