February 7, 2017, update for Office 2016 (KB3127991)

This article describes update KB3127991 for Microsoft Office 2016, which was released on February 7, 2017. This update has a prerequisite.

Be aware that the update on 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?)

Improvements and fixes

This update fixes the following issue:

You may experience unexpected issues in Excel 2016 that has multiple third-party add-ins loaded. For example, you may not be able to save a workbook to a mapped network drive.

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 what 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

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

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

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 updateWindows 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 KB3127991, 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 KB3127991, 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 KB3127991, and then select Uninstall.


References

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.

File informationThe global version of this update has the file attributes (or later file attributes) that are listed in the following table. 

x64

File identifier

File name

File version

File size

Date

Time

Mso20win32client.dll.x64

Mso20win32client.dll

16.0.4498.1000

3,159,808

31-Jan-2017

18:30

Mso20win32client.dll.x86

Mso20win32client.dll

16.0.4498.1000

1,922,816

31-Jan-2017

18:35

x86

File identifier

File name

File version

File size

Date

Time

Mso20win32client.dll.x64

Mso20win32client.dll

16.0.4498.1000

3,159,808

31-Jan-2017

18:29

Mso20win32client.dll.x86

Mso20win32client.dll

16.0.4498.1000

1,922,816

31-Jan-2017

18:28

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