I have downloaded CC2017 but install not working

what's your os version? if it's qualifying, (eg, 10.10 or better):

clean your computer of cc files per http://www.adobe.com/support/contact/cscleanertool.html

restart your computer (don't skip this)

reinstall the cc desktop app, https://creative.adobe.com/products/creative-cloud.

if you're unable to install the cc desktop app at this stage, use an administrator account (solution 3 here, https://helpx.adobe.com/creative-cloud/kb/creative-cloud-missing-damaged.html)

use the desktop app to install your cc programs/trials

[moved from Downloading, Installing, Setting Up to Creative Cloud Download & Install]