July 5, 2016, update for Office 2013 (KB3115255)

Applies to: Microsoft Office 2013 Service Pack 1Office Home and Student 2013 RT

This article describes update KB3115255 for Microsoft Office 2013, which was released on July 5, 2016. This update also applies to Office Home and Student 2013 RT. 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 2013. It doesn't apply to the Office 2013 Click-to-Run editions, such as Microsoft Office 365 Home. (How to determine?)

Improvements and fixes

Fixes the following issues:
  • Assume that you set the Windows taskbar to auto-hide. When you switch to the Slide Sorter view in PowerPoint 2013, the auto-hidden taskbar can't be reactivated.

  • Images in email messages aren't scaled correctly in Outlook 2013 if you use high DPI monitors.

  • Assume that you have a Project .mpp file that's stored in a SharePoint document library. When you click the file name, the project opens but you don't see a banner that offers you the ability to edit or check out the project. Instead, the project may keep in a read-only state and you can't save or check in changes.

    Note To fix this issue, you also need to install July 5, 2016, update for Project 2013 (KB3115264).

  • When you open the Compare Versions dialog box for a document that's stored in a document library on a SharePoint server for the first time in Word 2013, no document versions are displayed.

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. The updates in the Download Center can't be installed on Office Home and Student 2013 RT.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 2013 Service Pack 1 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 2013 application, such as Microsoft Word 2013.
  2. On the File menu, select Account.
  3. For Office 2013 Click-to-Run installations, an Update Options item is displayed. For MSI-based installations, the Update Options item isn't displayed.
Office 2013 Click-to-Run installationMSI-based Office 2013
The screenshot for Word Click To Run The screenshot for Word MSI


Learn about the standard terminology that Microsoft uses to describe 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.