Could not transfer artifact (https://repo.maven.apache.org/maven2): Received fatal alert: protocol_version -> [Help 1]

Question

I am new to Maven and trying to setup my first project in Maven but receiving the below error message when I am doing " Run as -> Maven install " in Eclipse. Below is my settings.xml and pom.xml

Settings.xml

    <settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"   xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0                       https://maven.apache.org/xsd/settings-1.0.0.xsd">  <localRepository>C:\Users\Iam\.m2\repository</localRepository>   <profiles>     <profile>       <repositories>     <repository>         <id>central</id>         <url>http://central.maven.org/maven2/</url>         </repository>     </repositories>       <pluginRepositories>       </pluginRepositories>     </profile>   </profiles> </settings> 

POM.XML

<?xml version="1.0" encoding="UTF-8"?> <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.mytest</groupId>    <artifactId>MySpringBootMaven</artifactId>   <packaging>war</packaging>   <version>0.0.1-SNAPSHOT</version>      <parent>         <groupId>org.springframework.boot</groupId>         <artifactId>spring-boot-starter-parent</artifactId>         <version>1.5.11.RELEASE</version>     </parent>   <build>     <plugins>        <plugin>         <groupId>org.springframework.boot</groupId>             <artifactId>spring-boot-maven-plugin</artifactId>         </plugin>           <plugin>                 <groupId>org.apache.maven.plugins</groupId>                 <artifactId>maven-war-plugin</artifactId>                 <version>2.5</version><!--$NO-MVN-MAN-VER$-->                 <configuration>                     <warnName>Test.war</warnName>                 </configuration>             </plugin>     </plugins>  </build> </project> 

Error message:

at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356) Caused by: org.eclipse.aether.resolution.ArtifactDescriptorException: Failed to read artifact descriptor for org.springframework.boot:spring-boot-maven-plugin:jar:1.5.11.RELEASE     at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.loadPom(DefaultArtifactDescriptorReader.java:302)     at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.readArtifactDescriptor(DefaultArtifactDescriptorReader.java:218)     at org.eclipse.aether.internal.impl.DefaultRepositorySystem.readArtifactDescriptor(DefaultRepositorySystem.java:287)     at org.apache.maven.plugin.internal.DefaultPluginDependenciesResolver.resolve(DefaultPluginDependenciesResolver.java:103)     ... 27 more Caused by: org.eclipse.aether.resolution.ArtifactResolutionException: Could not transfer artifact org.springframework.boot:spring-boot-maven-plugin:pom:1.5.11.RELEASE from/to central (https://repo.maven.apache.org/maven2): Received fatal alert: protocol_version     at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:444)     at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifacts(DefaultArtifactResolver.java:246)     at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifact(DefaultArtifactResolver.java:223)     at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.loadPom(DefaultArtifactDescriptorReader.java:287)     ... 30 more Caused by: org.eclipse.aether.transfer.ArtifactTransferException: Could not transfer artifact org.springframework.boot:spring-boot-maven-plugin:pom:1.5.11.RELEASE from/to central (https://repo.maven.apache.org/maven2): Received fatal alert: protocol_version 

How to resolve the Received fatal alert: protocol_version ? My java version is 1.7 and maven version is 3.3.3

Answer 1

Sonatype no longer supports TLSv1.1 and below (effective, June 18th, 2018). My guess is that you are using TLSv1.1 protocol or below.

The documentation I listed gives you 4 options:

1. Upgrade your Java runtime, for example with OpenJDK builds or Oracle paying support
2. Configure your Java runtime to enable TLS 1.2 by adding -Dhttps.protocols=TLSv1.2
3. Use a repository manager that uses a Java version supporting TLS 1.2
4. Revert back to http until you can acheive one of the above remediation steps.

I fixed it myself by just using -Dhttps.protocols=TLSv1.2 as a VM argument.  

Answer 2

For a permanent solution(mostly required in Java 7) - in you build directory(where you do the mvn command from) add directory:

.mvn (in cmd mkdir .mvn)

and in it create file

jvm.config

and in put the following line:

-Dhttps.protocols=TLSv1.2