Problem: failed to create task or type nbdeploy?? SOLVED!!  After a long time , I was testing my project in Java EE but  unfortunately i encountered the following the error:  Problem: failed to create task or type nbdeploy  Cause: The name is undefined.  Action: Check the spelling.  Action: Check that any custom tasks/types have been declared.  Action: Check that any / declarations have taken place.  BUILD FAILED (total time: 2 seconds)   Then after several futile attempts , I finally get a solution to my problem and it really helped me a lot. Actually , i disabled the plugins responsible for Java EE and Web related applications . To enable this , Go to Tools >> Plugins >>Installed Tab >> Check Java Web and EE checkbox. The problem is solved.