What is the scope under which the Flex response is working / not working ?
The Admin guide states under section ‘About Endpoint FlexResponse’
You can use Endpoint FlexResponse rules on the following types of endpoint destinations and protocols: ■ Endpoint Discover ■ Hard drive monitoring ■ USB-connected devices ■ SMTP ■ HTTP(S)
After you have installed the Endpoint FlexResponse plug-in, you can add it as a response rule action in your policy.
The endpoint FlexResponse is not supported with AFAC. The AFAC is considered as a separate DIM event, so it’s not same as local drive monitoring event. The endpoint FlexResponse is NOT supported on following DIM events: