Maven plugins can not be found in IntelliJ

Question

After updating IntelliJ from version 12 to 13, the following Maven-related plugins cannot be resolved:

org.apache.maven.plugins:maven-clean-plugin:2.4.1
org.a         


        

Answer 1

My case:

• maven-javadoc-plugin with version 3.2.0 is displayed red in IntelliJ.
• Plugin is present in my local maven repo.
• Re-imported maven million times.
• Ran mvn clean install from the command line N times.
• All my maven settings in IntelliJ are correct.
• Tried to switch between Bundled and non-bundled Maven.
• Tried do delete the whole maven repo and to delete only the plugin from it.
• Nothing of the above worked.
• The only thing that almost always helps with modern IntelliJ IDEA versions is "Invalidate caches / Restart". It helped this time as well. maven-javadoc-plugin is not red anymore, and I can click on it and to to the source pom file of the plugin.