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layout: default_md title: JAXB 2.0 API is being loaded from the bootstrap classloader, but this RI () needs 2.1 API. title-class: page-title-activemq5 type: activemq5

 FAQ > Errors > Exceptions > JAXB 2.0 API is being loaded from the bootstrap classloader, but this RI () needs 2.1 API.

When using JDK 6 (up to JDK 6 Update 3) to run ActiveMQ you can run into this exception. There are two solutions to this:

• Upgrade to JDK to 1.6.0_04 or above, which includes JAXB 2.1
• Copy JAXB 2.1 to <JAVA_HOME>/lib/endorsed to override the API jars that ship with the JDK