Maven error: Unable to get resource / Server redirected too many times

Question

Our proxy went down and I tried to update dependencies with Maven while it was off. Since then I can't download anything with Maven. I get this error for everything. I tried -U option, deleting my local repository and tried different Maven version (2.0.9, 2.2.1) but it doesn't work. Any idea how to solve this?

Earlier it also said 'repository will be blacklisted' to all of them.

Downloading: http://repo1.maven.org/maven2/org/apache/maven/plugins/maven-compiler-plugin/2.1/maven-compiler-plugin-2.1.pom

[WARNING] Unable to get resource 'org.apache.maven.plugins:maven-compiler-plugin:pom:2.1'
 from repository central (http://repo1.maven.org/maven2): 
Error transferring file: Server redirected too many  times (20)
  org.apache.maven.plugins:maven-compiler-plugin:pom:2.1

from the specified remote repositories:
  jboss-snapshot (http://snapshots.jboss.org/maven2),
  central (http://repo1.maven.org/maven2),
  JBoss Repo (http://repository.jboss.com/maven2),
  spring-maven-snapshot (http://maven.springframework.org/snapshot),
  com.springsource.repository.bundles.external (http://repository.springsource.com/maven/bundles/external),
  com.springsource.repository.bundles.snapshot (http://repository.springsource.com/maven/bundles/snapshot),
  jboss (http://repository.jboss.com/maven2),
  com.springsource.repository.bundles.release (http://repository.springsource.com/maven/bundles/release),
  jboss-snapshot-plugins (http://snapshots.jboss.org/maven2),
  com.springsource.repository.bundles.milestone (http://repository.springsource.com/maven/bundles/milestone),
  jboss-plugins (http://repository.jboss.com/maven2)


        at org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:228)
        at org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:90)
        at org.apache.maven.project.DefaultMavenProjectBuilder.findModelFromRepository(DefaultMavenProjectBuilder.java:558)
        ... 25 more
Caused by: org.apache.maven.wagon.ResourceDoesNotExistException: Unable to download the artifact from any repository
        at org.apache.maven.artifact.manager.DefaultWagonManager.getArtifact(DefaultWagonManager.java:404)
        at org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:216)
        ... 27 more

Answer 1

I got the same error with Windows ISA proxy. I had to put my Windows domain name and username in ~/.m2/settings.xml like this:

<username>DOMAIN\USERNAME</username>