http request failed message when trying to download Adobe Acrobat Pro DC

Please read https://forums.adobe.com/thread/1499014

-try some steps such as changing browsers and turning off your firewall

-also flush your browser cache so you are starting with a fresh browser

-check hosts file for blocked entries https://forums.adobe.com/thread/1912777

http://myleniumerrors.com/installation-and-licensing-problems/creative-cloud-error-codes-wip/

https://helpx.adobe.com/creative-cloud/kb/creative-cloud-desktop-application-failed.html

http://helpx.adobe.com/creative-cloud/kb/failed-install-creative-cloud-desktop.html

or

A chat session where an agent may remotely look inside your computer may help

Creative Cloud chat support (all Creative Cloud customer service issues)

http://helpx.adobe.com/x-productkb/global/service-ccm.html