Milestone with “Finish not later than” constraint and Float Ii n MS PROJECT 2016!

Hi guys,

I have another great question from one of my Blog readers:

“Hi Nenad,

I have another question for you.Suppose you have a task with start date, for example, 7 Nov and 5d duration. Its successor is a finish milestone with constraint ” finish not later than” 18 Nov.

Now I expect to have a float of 5 days, but it isn’t so. Project gives 0d float. Is it a bug?”

No, it is not a bug, and I will show you why in MS PROJECT 2016!

First I will create brand new Project with one Task and one Milestone, and I will make this milestone as Successor of the Task:


Now, I will put the constraint “Finish no later than” for this Milestone, and the date will be 18.11.2016:




Now I will show Detail Gantt View:


I will apply Schedule table:


As you can see, Slack (or Float) is zero. Why? Because with constraint: Finish no later than”, Ms Project knows that Task or Milestone should not finish later than specific date, but it can be finished earlier. So, there is no slack here. but, if I put Must finish on on the Milestone, I will get:



Now, Milestone has fixed date for finish, and it is 18.11.2016, and it should be not finished earlier, so Task has Slack (float) 5 days, e.g it can last 5 days longer!

Hope this clear this issue up!



About Nenad Trajkovski

Location: Zagreb, Croatia Occupation: Project Manager Interests: Project Management and MS PROJECT He was born in Zagreb, Croatia at 1963. After completing his college he started working on projects in different business areas (banking, manufacturing, automotive industry, distribution, oil companies, etc.) developing and implementing ERP systems into different companies. He has got a lot of experience working with people in different business processes and also possesses great knowledge in information technologies and financial services. Today he works as a business consultant, adn Project Manager in PERPETUUM MOBILE d.o.o. Zagreb. He is a regular lecturer for Project Management in MS Innovation Center in Varaždin, Logosoft Sarajevo in Bosnia and Herzegovina and SEAVUS GROUP in Skopje Macedonia. He was named the best lecturer of WINDAYS 2008 while his lecture was also voted as the best. In addition, he was in TOP 10 lecturers at the MS SINERGY 2009 and MS VISIA 2009, 2010. Shares first place as the best lecturer of KulenDays 2009 and 2010 and PMI Conference 2009 in Zagreb. He is also a regular lecturer in the MS Community. He is a Certified Accountant and a PMP (Project Manager Professional) and a PMI-RMP (Risk Manager Professional), MCP, MCT, and Microsoft Certified Technical Specialist - Microsoft Project 2010. From 01.01.2012 awarded with MVP (Microsoft Most Valuable Proffesional - Microsoft Project)!
This entry was posted in MICROSOFT PROJECT, MS PROJECT 2016, PMI, PRoject Management and tagged , , , . Bookmark the permalink.

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