You should not have 2 different software installed. Use the KILL MCAFEE TOOL MCPR.EXE [URL] [URL] [URL] 
I recently purchased a Dell Inspiron desktop, which came with a 30 day trial of McAfee security software  pre-installed. I have my own complete security software installed and do not need this additional software. Every day during the trial period, McAfee kept harassing me with notifications to purchase this software, despite my indicating that I didn't need it. Now that the trial period has expired, it continues this obnoxious harassment. Does anyone know how to stop this ? Do I have to uninstall everything that says McAfee on my computer to get this to stop ? 
Stopping McAfee purchase notifications