Has your Internet Security 2014 Version expired? If it has not, it should automatically upgrade. To answer your question,if you wish to install the 2015 Version. Yes you would have to uninstall Version 2014, and then download and install the 2015 version.
You can follow these Guidelines/Instructions to do so:How to uninstall or reinstall supported McAfee products using the Consumer Products Removal tool (MCPR)
Or if you prefer can contact McAfee Technical Support 24/7 and it is Free. Via Phone/Chat being much quicker. Services and Support for Home and Office
All the very best
McAfee Community Moderator
Moved appropriately to General Discussion > Discussions By Moderator
Internet Security has NOT expired - still 1 month to go. Have installed new versions of this for several years with no problems but, since I am switching to Total Protection for 2015, I was just curious if things would be a little more complicated this year,
I apologize for not noticing that you were switching to McAfee Total Protection, been a long day. To answer your question, yes you will have to uninstall your McAfee Internet Security Suite, before you install MTP.
Simply follow the procedures listed in my prior post, and you should have no difficulties.
As a matter of fact, I run McAfee Total Protection myself.
All the very best,