September 5, 2017, update for Office 2016 (KB3191923)

This article describes update 3191923 for Microsoft Office 2016 that was released on September 5, 2017. This update has a prerequisite.

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. (How to determine?)

• This update enables certain special characters for the Add-in commands in the Office 2016 ribbon.
• This update improves the Internet Explorer session to make sure that you can reuse the Internet Explorer process for applications in Outlook Inspector window.
• This update fixes some high DPI issues for add-ins. For example, you have a high-resolution monitor and a lower-resolution monitor. When you start the host on the high DPI monitor, start a task pane add-in, and then drag the window over to the lower DPI monitor. The add-in will be resized to a much smaller version that’s not usable. 

Microsoft Update

Use Microsoft Update to automatically download and install the update.

Download Center

This update is also available for manual download and installation from the Microsoft Download Center.

• Download update KB3191923 for 32-bit version of Office 2016
• Download update KB3191923 for 64-bit version of Office 2016

If you're not sure which platform (32-bit or 64-bit) you're running, see Am I running 32-bit or 64-bit Office? Additionally, see more information about how to download Microsoft support files.

Prerequisites

To apply this update, you must have Microsoft Office 2016 installed.

Restart information

You may have to restart the computer after you install this update.

To determine whether your Office installation is Click-to-Run or MSI-based, follow these steps:

1. Start an Office 2016 application.
2. On the File menu, select Account.
3. For Office 2016 Click-to-Run installations, an Update Options item is displayed. For MSI-based installations, the Update Options item isn't displayed.

Office 2016 Click-to-Run installation	MSI-based Office 2016

How to uninstall this update

Windows 10

1. Go to Start, enter View Installed Updates in the Search Windows box, and then press Enter.
2. In the list of updates, locate and select KB3191923, and then select Uninstall.

Windows 8 and Windows 8.1

1. Swipe in from the right edge of the screen, and then select Search. If you're using a mouse, point to the lower-right corner of the screen, and then select Search.
2. Enter windows update, select Windows Update, and then select Installed Updates.
3. In the list of updates, locate and select KB3191923, and then select Uninstall.

Windows 7

1. Go to Start, enter Run, and then select Run.
2. Enter Appwiz.cpl, and then select OK.
3. Select View installed updates.
4. In the list of updates, locate and select KB3191923, and then select Uninstall.

Learn about the standard terminology that's used to describe Microsoft software updates.

The Office System TechCenter contains the latest administrative updates and strategic deployment resources for all versions of Office.

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 the times for these files are listed in Coordinated Universal Time (UTC). The dates and the 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 the times may change when you perform certain operations on the files.

x86

x64