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

"IntelliJ IDEA and Maven - "Unresolved Plugin" Solutions" - in particular, deleting the plugin-folder - then reimporting all maven plugins after ide restart - worked for me.