March 6, 2018, update for Project 2016 (KB4011734)

Si applica a: Project Professional 2016Project Standard 2016

This article describes update 4011734 for Microsoft Project 2016 that was released on March 6, 2018. 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?)

Improvements and fixes

This update fixes the following issues:

  • If your project has manually scheduled tasks, and server notifications and reminders are turned on, you may receive unnecessary modified task notifications.
  • After actual work from a status update is applied to a task, the work values may not appear in Project as expected. For example, you report 4 hours on a day, but when you open the project, you don't see the time-phased actual work value. This issue may occur when you assign a new resource to a task that is completed.
  • When the Status field is referenced in a task custom field formula, other calculations may go slowly. For example, when you enter time-phased work data, it takes several seconds before you take back control.
  • When you add a resource to a project, the Booking Type field of the resource is ignored. For example, if the default booking type for the resource is set to "Proposed", when you add the resource to your project, the booking type is displayed as "Committed".
  • When you manipulate Views and other elements within the ProjectBeforeSaveBaseline event code in Project VBA, Project may crash after you save a baseline.
  • When you open and edit a project, then save back to Project Server 2016, you may see an error message that has some of the following elements in it:


    error="System.InvalidCastException: Specified cast is not valid”

  • When you open an XML file that has time-phased baseline data in Project 2016, the time-phased data on assignments may be incorrect. For example, the time-phased work hours that you entered are 2, 2, 2, 2. However, they are displayed as 2, 0, 0.58, 1.42, 0. The totals stay the same. 
  • When a task custom field formula is applied and it also uses the formula for summary and group rows, the summary row displays “#ERROR”.  In addition, the grouping row displays incorrect values.
  • Consider the following scenario:

    • You save a baseline in your project, and then you save the project.
    • You save another baseline and you save the project, close it, and check it in.
    • You query the database and view the MOD_DATE property for the given baselines.
    • Another user opens the project and saves a different baseline.
    • You query the database and check the MOD_DATE property for the three baselines.

    In this situation, you find that the values of the MOD_DATE property for the baselines are the same. They should be different and reflect the date and time when you saved the baselines.

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.

Update information


To apply this update, you must have Microsoft Project 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 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 update KB4011734, 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 update KB4011734, 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 update KB4011734, 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.

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.