title: Maven plugins can not be found in IntelliJ
body: <p>After updating IntelliJ from version 12 to 13, the following Maven-related plugins cannot be resolved:</p>
  <pre><code>org.apache.maven.plugins:maven-clean-plugin:2.4.1
  org.apache.maven.plugins:maven-deploy-plugin
  org.apache.maven.plugins:maven-install-plugin
  org.apache.maven.plugins:maven-site-plugin
  </code></pre>
  <p>When using IntelliJ 12, these were not in the plugins list. Somehow they've been added after the update and now IntelliJ complains they cannot be found. Where can I remove these plugins from the list OR resolve the problem by installing them?</p>
  <p>I can run maven goals <code>clean</code> and <code>compile</code> without problem, but the profile/plugins appear red with warnings in the IDE.</p>
  <p><strong>EDIT after 8 years:</strong> <em>Please also have a look at all other good answers here. The accepted answer is a common solution but might not work for you or for your IDE version</em></p>