Why am I getting "Received fatal alert: protocol_version" or "peer not authenticated" from Maven Central?
MavenMaven CentralMaven Problem Overview
I'm getting the below errors when connecting to Maven Central / https://repo1.maven.org after June 18th 2018.
Received fatal alert: protocol_version
or
Received fatal alert: peer not authenticated
Maven Solutions
Solution 1 - Maven
Solution 1: configure Java 7
It is need to enable TLS 1.2 protocol with Java property in the command line
mvn -Dhttps.protocols=TLSv1.2 install
install is just an example of a goal
The same error for ant can be solved by this way
java -Dhttps.protocols=TLSv1.2 -cp %ANT_HOME%/lib/ant-launcher.jar org.apache.tools.ant.launch.Launcher
Solution 2: use Java 7 with Oracle Advanced Support
Also problem can be solved by updating the Java 7 version. But the last available version (7u80) doesn't fix the problem. It is need to use an update provided with Oracle Advanced Support (formerly known as Java for Business).
Solution 3: use Java 8 instead
Configure $JAVA_HOME to point to Java 8.
Solution 2 - Maven
In June 2018, in an effort to raise security and comply with modern standards, the insecure TLS 1.0 & 1.1 protocols will no longer be supported for SSL connections to Central. This should only affect users of Java 6 (and Java 7) that are also using https to access central, which by our metrics is less than .2% of users.
For more details and workarounds, see the blog and faq here: https://blog.sonatype.com/enhancing-ssl-security-and-http/2-support-for-central
Solution 3 - Maven
The following command helped me (executing on bash before running mvn)
export MAVEN_OPTS=-Dhttps.protocols=TLSv1,TLSv1.1,TLSv1.2
Solution 4 - Maven
As said @v.ladynev, it works with JDK 1.7
With Eclipse, to be able to perform a "Run As" maven install with the TLS command-line parameter, just configure the JDK you're using.
Open the dialog through Window > Preferences > Java > Installed JREs.
Then highlight the one you're using (should be a JDK, not a JRE), click on Edit. In the field "Default VM arguments", fill the value -Dhttps.protocols=TLSv1,TLSv1.1,TLSv1.2. As shown below:
Clean the project (maybe optional), then re-run a maven install.
Solution 5 - Maven
I'm sorry, I don't know why you get the error message. However, I'm using Java 7 and Windows 10 and the solution for me was to temporarily use Java 8 by changing the JAVA_HOME environment variable. Then I could run mvn install and fetch from Maven Central Repository.
Solution 6 - Maven
Update maven version to 3.6.3 and run
mvn -Dhttps.protocols=TLSv1.2 install
it worked on centos 6.9
Solution 7 - Maven
Note that if you're using the IBM JDK you may also have to set
com.ibm.jsse2.overrideDefaultTLS=true
Solution 8 - Maven
Add "-Dhttps.protocols=TLSv1,TLSv1.1,TLSv1.2" to "Default VM arguments" under Window -> Preferences -> Java -> Installed JREs in Eclipse, validate and run your project, it should and will work.
Solution 9 - Maven
Using jdk7-u221, I was need to install the Java Cryptography Extension (JCE)
Solution 10 - Maven
For setting java properties on Windows app server:
- configure tomcat > run as admin
- then add Java opts:
- restart service.