An internal error occurred during: “Updating Maven

Question

Whenever I run eclipse, I get the message:

An internal error occurred during: "Updating Maven Dependencies".
Lorg/codehaus/plexus/archiver/jar/JarArchiver;

I am running maven version 3.0.4, and I've tried to update the JarArchiver only for it to fail time and time again.

Does anyone have any ideas on what might be causing the problem? If you have a solution, that would also be incredibly helpful.

Answer 1

The answer from user2125483 did not work for me. I tried selectively removing org.maven and org.codehaus.plexus package subdirectories of my local Maven repository (~/.m2) without any change in the error message. I needed to nuke my entire local Maven repository and rebuild from nothing for this error to vanish.

Answer 2

Navigate to C:\Users\.m2\repository\org\codehaus\plexus and delete all the subfolders inside plexus and re-run the pom.xml file

!! it worked !!

Answer 3

After closing Eclipse I removed all versions from ~/.m2/repository/org/codehaus/plexus/plexus-archiver except for the latest.

During the subsequent Eclipse startup another artifact causing an error was Maven Archiver, so I deleted old versions from ~/.m2/repository/org/apache/maven/maven-archiver as well.

After another Eclipse restart I performed Maven -> Update Project. All was well after that.

Answer 4

I tried all the above solutions but the error didn't go away. So then I checked Installed Programs on my windows machine and found two different versions of Java installed. (9.0.4 and 10.0.0) I removed Java 10 and now Maven update works. Hope this helps.

Answer 5

Steps below worked for me to resovle the issue(Add the following in pom.xml)

<plugin>
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-jar-plugin</artifactId>
          <version>2.4</version>
 </plugin>

Reimport the project again in Eclipse/STS.

The plugin configuration is taken from the maven site below: http://maven.apache.org/plugins/maven-jar-plugin/plugin-info.html

Answer 6

Deleting the repository in the ./m2 worked for me