One of my previous article talks about fresh or upgrade Installation of McAfee agent on Mac OS. But did you ever tried re-Installing the existing version of McAfee agent? Thus the result would be negative. So this post explains the reason behind it. And to overcome this check & force re-install same version of McAfee agent on Mac OS. Please be aware this document created for clients in ePO environment. For demonstration, I have Mac book running McAfee agent version 5.6.2 and will show you how to force Install same version again.