Could not calculate build plan: Plugin org.apache.maven.plugins:maven-jar-plugin:2.3.2 or one of its dependencies could not be resolved

Question

I got the following error message when I tried to create a Maven project in eclipse. Many have posted about proxies in settings.xml file and also flush the .m2 folder forcing it to download a new one. None of this is working for me. I'm at work, with proxy settings active in the internet options.

The error message:

Could not calculate build plan: Plugin org.apache.maven.plugins:maven-resources-plugin:2.5 or one of its dependencies could not be resolved:  Failed to read artifact descriptor for org.apache.maven.plugins:maven-resources-plugin:jar:2.5 Plugin org.apache.maven.plugins:maven-resources-plugin:2.5 or one of its dependencies could not be resolved:  Failed to read artifact descriptor for org.apache.maven.plugins:maven-resources-plugin:jar:2.5 

POM.XML:

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">   <modelVersion>4.0.0</modelVersion>   <groupId>com.blahhhhhhhhhhhhhhhhh</groupId>   <artifactId>HelloRESTEasy</artifactId>   <version>0.0.1-SNAPSHOT</version> </project> 

settings.xml:

  <proxies>     <proxy>       <id>optional</id>       <active>true</active>       <protocol>http</protocol>       <username>proxyuser</username>       <password>proxypass</password>       <host>proxyserver.company.com</host>       <port>8080</port>       <nonProxyHosts>local.net|some.host.com</nonProxyHosts>     </proxy>   </proxies> 

Answer 1

Try cleaning the local .m2/repository/ folder manually using rm -rf and then re build the project. Worked for me after trying every possible other alternative(reinstalling eclipse, pointing to the correct maven version in eclipse, proxy settings etc)