The reason for this error is because you're not including the jar files within the classpath. One way is to use the maven dependency within your pom.xml The information needed to do this can bere located by clicking on the, Using Maven and OpenAM

This is a simplified option if you're experiencing issues with solution #1, such as firewall restrictions or whether you're not using maven. Assuming you're using eclipse as your ID, you can populate the lib directory with the jar files by simply copying over the libs within your workspace. These lib files can be located as part of your agent download (though they are actually within your mod_openam.so file). The easiest way extract the lib files is to install the agent, of which the lib files can be located within the forgerock directory (which is typically created on the same location as your container called forgerock/j2ee_agents directory) After you've done that, you need to click project -> clean as shown in the diagrams

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