Kindly update us with the below details
What is the error message that you encounter while to trying to download McAfee programs ? Please provide us with a screen shot of the error
What is the operating system of the computer ?
How many computer do you use at home ?
Messages - Installation failed
I think its 64-bit
I only use one
P.S. - One of the technicians fixed it for me last week, but the problem arose a few days ago so should I contact them again?