Not able to install the Adobe Acrobat Reader DC getting error ' New version already installed'

I've got an of x64 bites windows 10 op system and I'd had an Adobe Acrobat Reader before that I uninstalled and I would have liked to replace it by an other newer one but the system allways sends 'not possible to install a new Reader 'cause there is the newest one on my PC'. As I've just mentioned I had but nowdays I haven't any Acrobat Reader but even the system senses the newest one. Moreover, I've got a x86 bites Reader folder that I've never used and that I can't uninstall from my PC. Otherwise, that was never install on my PC only it stayes there till now when I'd like to drop out of 'its place' but the system doesn't give permission to do saying I've no right to do but on the control panel's list there isn't the name of this x86 bites Reader.

What is this? What should I do that I can drop out that x86 Reader folder and I can install a new usable Reader? Could anyone help me?

Thanks a lot, in addition.

[Title Edited by Moderator]