OK, McAfee has been detecting the 'psexec.exe' tool from Sysinternals (http://www.sysinternals.com) as 'Unwanted Programs' and as default, automatically deleting it. Since I am using a corporate license at work, I do not have a support contract number easily available to me so I emailed 'Customer Service' to explain that they were detecting (now) Microsoft software as malware. Apparently it is a job for technical support and they were unable, or more likely unwilling, to pass the information on.
So, that will be the last time I contact McAfee directly and they will be removed from my malicious code submission list. I don't suppose they are bothered.