May 12, 2015, update for Project 2010 (KB2553251)

Gilt für: Microsoft Project 2010 Service Pack 2

This article describes update KB2553251 for Microsoft Project 2010 that was released on May 12, 2015. This update has a prerequisite.

Improvements and fixes

Fixes the following issue:
When you roll up baseline values from selected tasks into all summary tasks, the time-phased baseline work and cost values may be incorrect. For example, suppose that over a series of days, the time-phased baseline work values on the summary task are 4h, 2h, 8h, 0h, and 2.5h. After you save the baseline, the values may change to something like 4h, 4.13h, 4.13h, 4.13h, and 4.13h.

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 are not sure what platform (32-bit or 64-bit) you are running, see Am I running 32-bit or 64-bit Office? Additionally, see more information about how to download Microsoft support files .

Update information

Restart information

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


To apply this update, you must have Microsoft Project 2010 Service Pack 2 installed.


See the information 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.