Issue:
After upgrading the core server, many users will want to make sure their agent version matches the core version for various reasons. The best way to do this, is by using the "Rebuild All" feature.
Solution:
While logged into the core console > Tools> Configuration> Agent Configuration> Click the Rebuild all icon (Green circle with a blue gear shape)
A "Rebuild Progress" dialogue box will appear. The process is generally quick.:
Once the agent configurations have been rebuilt and says "Done", click Close. The "Scheduled Task" feature can be used to push out the updated agents.