Task constraints in Microsoft Project for the Web


as you already know, in Microsoft Project online or desktop version there are lot Task constraints (for example: Start No Earlier Than, Finish No Earlier Than, Must Start On, Must Finish On, etc.) In Microsoft Project for the Web you can find only two Task Constraints: Start No Earlier Than (SNET), and Finish No Earlier Than (FNET), and both of them are Semi Flexible Constraint type.

Let me show you those constraints. First (as always) I will create simple Project with three Tasks:


Let’s see how does it look at the Timeline View:


Now, I will put 5/14/2020 as Task 2 Start Date:


If I hoover my mouse over Strat Date I will see:


the little “star” in the right corner shows that it is constraint for the Start date. Now if I click on that date I will see:


here I can see “warning message” about constraint, and I can click on the button “Remove Constraint”, and it will be removed, so the Start Date will be set As Soon As Possible (know as flexible constraint). I will not do it for now.

Now I will set Finish date for Task 3 as 5/26/2020, and I will get:


As you can see Start date has been changed so duration remains 4 days!

Now I will change Duration for Task 1 to 1 day, and I will get:


As you can see Task 2 has the same Start Date, because it cannot be started before 5/14/2020.

I will change Duration for Task 2 to 1 day as well, and I will get:


As you can see Task 3 has the same finish Date, because it cannot be finished before 5/26/2020.

Finally I will change Duration for Task 1 to 10 days, and I will get:


Now, Start date for the Task 2, and finish Date for the Task 3 are changed, because those date are later than previous ones. And since they have No earlier constraint, it means that both of them can start and finish later.



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)!
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