May 1, 2018, update for Project 2016 (KB4018373)

Applies to: Project Professional 2016Project Standard 2016

This article describes update 4018373 for Microsoft Project 2016 that was released on May 1, 2018. 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 issues:

  • When you try to perform an action, for example, applying a font or a background format to a cell, Project may crash.

  • Consider the following scenario:

    • You create a fixed duration task that is 100% complete.
    • You create a custom calendar and add a one-day exception in the range of task duration.
    • You change the task calendar to the custom calendar, and then you see that the duration reduces by one day.

    • You save and then close the project.
    • You reopen and recalculate the project, and then check the finish date.
    In this situation, the actual finish date is shifted to one day later.
  • When projects are opened from a server, resources names aren't always seen. In addition, when you use the Build Team dialog box, you see the same thing where some resources don't have names. After you apply this update, the Resource Names are visible to the user.

  • Consider the following scenario:

    • You create a local project with some tasks and save it as a file.
    • You create a second project, you have the first project share resources from it and you save it as a local file.
    • You assign the resource to the tasks.
    • You save the projects.
    • You upload the project file and shared resource file to a SharePoint Online document library.
    • You open the project file from the document library, and you receive the message:

      This file shares resources from a resource pool

    • After you select OK, the shared resource file is also opened.
    • You add a new task to the project file and assign it to a resource.
    • You save the project file and close both files.
    In this situation, when you reopen the project file, the link to the shared resource file is lost.
  • Consider the following scenario:

    • As a team member, you open your timesheet and enter work for two adjacent days.
    • On the first day, you set the actual work value back to zero.
    • On the first day, you set 8 hours of non-working time on an administrator task (for example, vacation).
    • You send a status update for approval.
    • You open the previous week timesheet.
    • You enter actual work values.
    • You send the timesheet for approval and the status manager approves it.
    In this case, the actual work that's entered on the second day of the two days moves to the first day. The actual work should not move when the status update is applied to the project.

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 KB4018373, 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 KB4018373, 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 KB4018373, and then select Uninstall.


Learn about the standard terminology that is 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.