Eclipse - Errors running builder on project

I was getting this error constantly in eclipse:

> Errors during build. Errors running builder "Integrated External Tool > Builder" on project project. The builder launch configuration could > not be found. Errors running builder "Integrated External Tool > Builder" on project project. The builder launch configuration could > not be found.

I added this question and answering on my own as I could not find an answer on Stackoverflow and it may benefit someone else

Answer is:

> On your project "project", right click -> Properties>Builders Remove > the missing builder

Source http://www.eclipse.org/forums/index.php/t/28894/

You can follow these steps.

1. Select the right project.
2. Choose "project"on the tool bar -> Properties
3. Click "Builders" on the menu of the popped up window
4. Remove the missing builders

Reference links

I was facing the same issue,

> "Errors running builder 'Integrated External Tool Builder' on project > {PROJECT NAME}"

you must go to your .project file in your work space, and you can put in comment or delete this lines

<buildCommand>
			<name>org.eclipse.ui.externaltools.ExternalToolBuilder</name>
			<triggers>full,incremental,</triggers>
			...
            ...

</buildCommand>

and after that, you can rebuild your project and it will work correctly.

Reference: https://bugs.eclipse.org/bugs/show_bug.cgi?id=118294

In my case, this happened after fiddling with existing builders (e.g. renaming them) and the solution was to restart Eclipse (Neon.3 v4.6.3).

You need to remove missing builders from this location Right click on project->properties->Builders Remove all missing builders

Adding the builder ( for example : in my case java builder) in .project file of the error getting project worked for me.