January 3, 2017, update for Office 2016 (KB3128055)

Applies to: Office Home and Business 2016Office Home and Student 2016Office Professional 2016

This article describes update KB3127987 for Microsoft Office 2016, which was released on January 3, 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

Fixes the following issues:
  • Consider the following scenario:
    • You're using Microsoft Office 2016 Click-to-Run.
    • You're using an Office 365 Exchange Online mailbox, with Modern Authentication enabled.
    In this scenario, you may be prompted for credentials intermittently and multiple times in SharePoint Online. This behavior may start to occur when you browse to a SharePoint Online or OneDrive for Business library, and you rest the mouse pointer on the name of a user (such as the Modified By user). See KB3165135 for more information.
  • This update enables Microsoft Skype for Business Virtual desktop infrastructure (VDI) when you use Citrix RealTime optimization pack 2.0 and later versions.
  • This update enables Microsoft Skype for Business client to scale across monitors that are set to different DPIs.

    Note If this update doesn't work as expected, you should delete a registry key under HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Layers. The key has a name with the full path of lync.exe and a value of HIGHDPIAWARE.
    After you delete the registry key, you must restart Skype for Business to make sure that this fix functions correctly.

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.

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.

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 installationMSI-based Office 2016
The screenshot for Word click to run The screenshot for Word MSI


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 Information

The global version of this update has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.