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

View products that this article applies to.

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?)

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Improvements and fixes

  • 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. 

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How to download and install the update

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.

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.

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Update information


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.

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More information

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
The screenshot for Word click to run The screenshot for Word MSI

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.

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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.

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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 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.


osfclient-x-none.msp file information
File identifier File name File version File size Date Time
Minsbproxy.dll Minsbproxy.dll 16.0.4384.1000 42,752 14-Aug-2017 22:03
Minsbroamingproxy.dll Minsbroamingproxy.dll 16.0.4384.1000 42,744 14-Aug-2017 22:03
Msosb.dll Msosb.dll 16.0.4576.1000 151,808 14-Aug-2017 22:03
Osf.dll Osf.dll 16.0.4585.1000 1,127,680 14-Aug-2017 22:03
Osfintl.dll_1033 Osfintl.dll 16.0.4588.1000 251,648 15-Aug-2017 21:27
Osfproxy.dll Osfproxy.dll 16.0.4384.1000 42,744 14-Aug-2017 22:03
Osfroamingproxy.dll Osfroamingproxy.dll 16.0.4384.1000 42,752 14-Aug-2017 22:03
Osfshared.dll Osfshared.dll 16.0.4585.1000 142,592 14-Aug-2017 22:03
Osfui.dll Osfui.dll 16.0.4588.1000 341,760 15-Aug-2017 20:54
Websb.dll Websandbox.dll 16.0.4585.1000 596,224 14-Aug-2017 22:03


osfclient-x-none.msp file information
File identifier File name File version File size Date Time
Minsbproxy.dll.x86 Minsbproxy.dll.x86 16.0.4384.1000 42,752 14-Aug-2017 22:11
Minsbroamingproxy.dll.x86 Minsbroamingproxy.dll.x86 16.0.4384.1000 42,744 14-Aug-2017 22:11
Msosb.dll.x86 Msosb.dll.x86 16.0.4576.1000 151,808 14-Aug-2017 22:11
Osfproxy.dll.x86 Osfproxy.dll.x86 16.0.4384.1000 42,744 14-Aug-2017 22:11
Osfroamingproxy.dll.x86 Osfroamingproxy.dll.x86 16.0.4384.1000 42,752 14-Aug-2017 22:11
Minsbproxy.dll Minsbproxy.dll 16.0.4384.1000 49,408 14-Aug-2017 22:10
Minsbroamingproxy.dll Minsbroamingproxy.dll 16.0.4384.1000 49,408 14-Aug-2017 22:10
Msosb.dll Msosb.dll 16.0.4576.1000 214,272 14-Aug-2017 22:10
Osf.dll Osf.dll 16.0.4585.1000 1,748,736 14-Aug-2017 22:10
Osfintl.dll_1033 Osfintl.dll 16.0.4588.1000 251,648 15-Aug-2017 21:33
Osfproxy.dll Osfproxy.dll 16.0.4384.1000 49,400 14-Aug-2017 22:10
Osfroamingproxy.dll Osfroamingproxy.dll 16.0.4384.1000 49,408 14-Aug-2017 22:10
Osfshared.dll Osfshared.dll 16.0.4585.1000 226,560 14-Aug-2017 22:10
Osfui.dll Osfui.dll 16.0.4588.1000 495,872 15-Aug-2017 20:56
Websb.dll Websandbox.dll 16.0.4585.1000 845,056 14-Aug-2017 22:10

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Keywords: kbexpertisebeginner, kbsurveynew, atdownload, kb

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Article Info
Article ID : 3191923
Revision : 22
Created on : 4/10/2020
Published on : 4/10/2020
Exists online : False
Views : 388