Classpath entry org.eclipse.m2e.MAVEN2_CLASSPATH_CONTAINER will not be exported

Question

I\'m getting this warning in Eclipse:

Classpath entry org.eclipse.m2e.MAVEN2_CLASSPATH_CONTAINER will not be exported or published. Runtime ClassNotFo

Answer 1

Most answers, including the currently accepted one, only provide a temporary solution to this issue: every time I chose Maven > Update Project… and leaving the option 'Update project configuration from pom.xml' on, the warning came back.

However, after installing m2e-wtp - Maven Integration for WTP in Eclipse 4.5 (Mars) and issuing Update Project… again, while leaving the option selected, the warning (and resulting error) went away.