Calculate project after each edit option and Task inspector in MS PROJECT 2019


Today I will show you the option: Calculate project after each edit in MS Project 2019!

This option can be found here:




and finally:


With this option set to On I will create a simple project with three tasks, connected together:


Now I will show you the Task Inspector:


As you can see, everything look fine, and is fine.

Now, I will turn this option Off, and I will crate the same Project again:


As you can see, all Start dates are the same (of course, this applies to my specific example), and calculation is not made at all. If I look at the Task inspector it will look like:


As you can see, I can’t see predecessors for Task 2, nor any other thing. When I hit F9 button, I will get everything like in example with option turned on.

The question is very simple: Why, on earth, will someone leave this option turned off? Even it looks odd, it is not. Every time I add or change something on the project, the whole calculation is made, with this option turned on. Do not forget that MS Project can be use for extremely large projects, so the calculation can last for a while. Instead of keeping this option turned on, I can turn it off, and manually ask for recalculation by hitting F9 button.

Which approach is better? None! If you have very large projects maybe it is better to keep this option off, but for “smaller” project keep it turned on.

And one more important thing. If this option is turned on or off, it will be applied to every single project. The new one, and existing one. There is no option to make it on or off for one single projects. So, if you will like to have it for some projects on, and for some others – off, you will need to constantly turn it on and off.



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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