I am using CSA version 6 and have enabled the signature-based antivirus policy for host desktops. When trying to update the host AV definitions from the host agent, it works great. However, when trying to force the host to update via the MC group or MC host page (Force AV Update) button, it shows quick text that says "Done" with a green checkmark, but no update occurs.
I have looked through Cisco support bug toolkit and have not found anything.