How to delete the 16.7 update folder?

So for me the 16.7.2.10 update was downloaded back on the 18th, for some reason it never installed itself and its still sitting in the “Norton Installer” folder, I dont know why it didnt install itself but im real glad because we all know the headaches it brings, anyhow I wish to know how I can delete this update folder so it doesnt somehow install itself later, I tried to delete but it says access denied…