While https://www.bleepingcomputer.com/virus-removal/remove-total-security may do the removal, let's get into that denied access.
You may be the admin but even the admin must obey file and folder permissions. IOW, no god mode here.
So what to do? There are a few ways to delete such. I like to boot Safe Mode and try that first (too easy not to try.) And if it fails in safe mode, while in safe mode I look at the file, folder permissions and change them to allow me to delete. Here's a tutorial: https://www.eightforums.com/tutorials/2808-take-ownership-file-folder-drive-registry-key-windows-8-a.html
I downloaded this software as a free version. I decided I didn't care for it and tried to uninstall it. I used my uninstall feature but it remained - I then tried ReVo uninstaller and I was denied access - I finally just went into my C drive to delete and I receive message that I need administrators permission - Silly me I thought I was the only single administrator - I have emailed the company numerous times and they only outline what steps I have already taken - I want this off my PC as it runs from time to time. Help !!