McAfee has provided downloadable test file programs that you can use to ensure that Real Protect detection functionality is working, and that endpoints can communicate with the cloud for detections. Running the test files will trigger a Real Protect detection, and prevent the files from running, if Real Protect scanning is functioning correctly. 

For information about downloading and using the test file programs, see https://kc.mcafee.com/corporate/index?page=content&id=KB88828.