Creative Cloud Desktop update stuck at 6%

See here:
https://helpx.adobe.com/creative-cloud/kb/creative-cloud-desktop-app-installation-stuck.html
https://helpx.adobe.com/creative-cloud/kb/stop-responding-downloading-apps.html
https://helpx.adobe.com/creative-cloud/kb/troubleshoot-install-logs-cc.html
https://community.adobe.com/t5/get-started/updating-adobe-creative-cloud-stuck-at-39/m-p/10916241?page=1
https://helpx.adobe.com/creative-cloud/kb/creative-cloud-app-doesnt-open.html
I had a similar issue.

Make sure that you have all Windows updates that are available.

The one thing that was causing it for me, believe it or not, was that I needed to do a clean installation of the latest Studio graphics driver from the NVIDIA website. After doing that and restarting, all was OK.

first, confirm you can connect to adobe's secure servers, https://helpx.adobe.com/x-productkb/policy-pricing/activation-network-issues.html

if you can't connect, do nothing else and repost what you did. 

if you can connect and still cannot update cc, read further:

try resetting the cc app: To reset the Creative Cloud desktop app, make sure it's in the foreground, then press:

Win: Ctrl + Alt + R
Mac: Cmd + Opt + R

if that fails, do a clean cc install:

uninstall every cc app including preferences, https://helpx.adobe.com/creative-cloud/help/uninstall-remove-app.html
then uninstall the cc desktop app, https://helpx.adobe.com/creative-cloud/help/uninstall-creative-cloud-desktop-app.html
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 4 here, https://helpx.adobe.com/creative-cloud/kb/creative-cloud-missing-damaged.html)
use the desktop app to install your cc programs/trials