Error updating group repository metadata maven
This will rebuild repository index for local use, and will help you to quickly add any JAR file dependency in your Maven project.That's all about how do you fix this problem of Maven not able to search dependencies in Eclipse.It is the Global repository on which Maven central library ( is configured.Just right click there and select Rebuild Index option.You should also check the option "Do not automatically update dependencies from remote repositories", because that will download latest build every time they were pushed into Maven central repository.By the way, this error has nothing to do with Eclipse Luna.Recently I face an strange issue while using Maven in Eclipse via M2Eclipse plugin.I have created a Maven Java project in Eclipse and subsequently tried to add Spring framework as dependency, to my surprise, nothing was happening.
That's why you need to check the option "Download repository Index updates on startup".
At first you will see it's not working as shown in first screenshot.
You can see I was searching for spring framework Java but there is no search result, in fact it was saying artifact id cannot be empty.
You can see that Eclipse is updating indexes and it's doing it from Maven central repository,
If you had configured internal nexus repository then it will download from there.