Can the "Upgrade Agent" feature be used to Downgrade an Agent Client Collector (ACC)The "Upgrade Agent" feature cannot be used to Downgrade an Agent Client Collector (ACC). Downgrades are not supported. You might want to do this after finishing instance upgrade testing, when you have re-cloned the instance back to a previous version. If you try to upgrade the agent, you should expect to see an "Agent version is equal to (or higher than) ACC-F version; nothing to upgrade." error. A manual uninstall, followed by a fresh install of the version you need, would be required to replace an ACC install with an older version, if you have that requirement for any reason.