Requests to http://repo1.maven.org/maven2/ return a 501 HTTPS Required status and a body

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Effective January 15, 2020, The Central Repository no longer supports insecure communication over plain HTTP and requires that all requests to the repository are encrypted over HTTPS.

If you're receiving this error, then you need to replace all URL references to Maven Central with their canonical HTTPS counterparts:

Replace http://repo1.maven.org/maven2/ with https://repo1.maven.org/maven2/

Replace http://repo.maven.apache.org/maven2/ with https://repo.maven.apache.org/maven2/

If for any reason your environment cannot support HTTPS, you have the option of using our dedicated insecure endpoint at http://insecure.repo1.maven.org/maven2/

For further context around the move to HTTPS, please see https://blog.sonatype.com/central-repository-moving-to-https.

Central 501 HTTPS Required – Sonatype Support, The Central Repository: Requests to http://repo1.maven.org/maven2/ return a 501 HTTPS Required status and a body: 501 HTTPS Required. Beware that your parent pom can (re) define repositories as well, and if it has overridden central, you’ll need to fix that (so places to fix: ~/.m2/settings.xml and also parent poms).

I fixed with the following steps but it uses http: 1) got to .m2 folder 2) create file settings.xml 3) copy paste below

<settings>
    <mirrors>
        <mirror>
          <id>centralhttps</id>
          <mirrorOf>central</mirrorOf>
          <name>Maven central https</name>
          <url>http://insecure.repo1.maven.org/maven2/</url>
        </mirror>
      </mirrors>
      </settings>

501 HTTPS Required error, Use https://repo1.maven.org/maven2/ More information at https://links.sonatype. com/central/501-https-required. How do I As of January 15, 2020, The Central Repository no longer supports insecure communication over HTTP and requires that all requests to the repository are encrypted over HTTPS. Related articles. How to Redirect HTTP requests to HTTPS? Configuring Nexus for Secure Access to Maven Central; Maven is unable to connect to Nexus after configuring Nexus to use SSL.

Beware that your parent pom can (re) define repositories as well, and if it has overridden central and specified http for whatever reason, you'll need to fix that (so places to fix: ~/.m2/settings.xml AND also parent poms).

If you can't fix it in parent pom, you can override parent pom's repo's, like this, in your child pom (extracted from the 3.6.3 default super pom, seems they changed the name from repo1 as well):

  <repositories>
    <repository>
      <id>central</id>
      <name>Central Repository</name>
      <url>https://repo.maven.apache.org/maven2</url> <!-- the https you've been looking for -->
      <layout>default</layout>
      <snapshots>
        <enabled>false</enabled> <!-- or set to true if desired, default is false -->
      </snapshots>
    </repository>
  </repositories>

Maven Task Fails with HTTP 501. Central Repo no longer accepts , Central Repo no longer accepts http traffic, must be https #12156 If you have an issue or request for the Azure Pipelines service, use developer community instead: from/to central (http://repo.maven.apache.org/maven2): Failed to transfer file: Return code is: 501 , ReasonPhrase:HTTPS Required. Teams. Q&A for Work. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information.

Try to add the next statament in your pom.xml

<pluginRepositories>
<pluginRepository>
  <id>central</id>
  <name>Central Repository</name>
  <url>https://repo.maven.apache.org/maven2</url>
  <layout>default</layout>
  <snapshots>
    <enabled>false</enabled>
  </snapshots>
  <releases>
    <updatePolicy>never</updatePolicy>
  </releases>
</pluginRepository>
</pluginRepositories>

<repositories>
 <repository>
   <id>central</id>
   <name>Central Repository</name>
   <url>https://repo.maven.apache.org/maven2</url>
   <layout>default</layout>
   <snapshots>
      <enabled>false</enabled>
   </snapshots>
 </repository>
</repositories>

Also, you have to specified the repositories in: MAVEN\conf\settings.xml

<mirrors>
 <mirror>
   <id>other-mirror</id>
   <mirrorOf>central</mirrorOf>
   <name>Other Mirror Repository</name>
   <url>http://insecure.repo1.maven.org/maven2/</url>
 </mirror>
 <mirror>
  <id>internal-repository</id>
  <name>Maven Repository Manager running on https://repo1.maven.org/maven2</name>
  <url>https://repo1.maven.org/maven2</url>
  <mirrorOf>*</mirrorOf>
 </mirror>
</mirrors>

Maven Central Repository is moving to HTTPS and disablig HTTP , Failed to transfer file: http://repo.maven.apache.org/maven2/<some/dependency/ artifact>.pom Return code is: 501 , ReasonPhrase:HTTPS Required. longer supporting communication over HTTP and it requires requests to the repository must be over HTTPS. Replace: http://repo1.maven.org/maven2/ 회사에서 maven 관련 프로젝트의 빌드가 전부 깨졌다 젠킨스고 뭐고 .. 이유를 전혀 모르겠었다 .. 갑자기 maven repo도 501을 뱉어내고 한두시간 정도의 시간을 날려먹었다 결론부터 얘기하면 2020년 1월 15일..

FYI for Gradle users just use,

repositories {
   maven {
      url = 'https://repo.maven.apache.org/maven2'
   }
}

Maven is moving to HTTPS and disabling HTTP access. Short story, from January 15, 2020, Maven Central repository is not longer supporting HTTP connections (other repositories are doing the same).

Requests to http://repo.maven.apache.org/maven2/ return a 501 HTTPS Required status and a body:

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Return code is: 501 , ReasonPhrase:HTTPS Required. and 'parent.relativePath' points at wrong local POM @ line 18, column 11 -> [Help 2] 22:28:15 [ERROR] 22:28:15 [ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.

Comments

how do you make this change? From the other posts, I've tried their suggestions and it still doesn't work. I've modified settings.xml and added the repositories to my pom.
I changed 'http' to 'https' is my BuildConfig.groovy, but still 'grails clean' reports http error and maven points to 'http'.
This is so aweful on mavens part. Suddenly maven stops to work their own settings.
This is the simplest solution. Thanks Man.