Eclipse import Maven Engineering missing artifact (actual presence) Error resolution

Locate the jar file where the error occurred, delete the _maven.repositories file (or open it with a text editor, change ">main=" to ">=", remove Main, and, of course, the other value), and then update project.

_maven.repositories Introduction:

_maven.repositories hold the information about the origin of the artefacts. The Maven tries to update your jar is from the old location (as saved in _maven.repositories) and fails. The presumtion is, the same aftifact on a different remote repository might be different.

Eclipse import Maven Engineering missing artifact (actual presence) Error resolution