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

I solved it now. However it only is solved in Netbeans. Not sure why eclipse still won't take the settings.xml that is changed. The solution is however to remove/comment the User/Password param in settings.xml

Before:

      <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> 

After:

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