what about win xp?
if that fails or you're unable to do this, restart your computer and retry installing.
if that fails delete the entire contents of the OOBE folder:
1) close and quite everything adobe including the Creative Cloud desktop app if it's installed
2) Browse to the following location based on your operating system.
A) Mac OS: /Users/<user folder>/Library/Application Support/Adobe/OOBE
NOTE: \Users\<user folder>\Library\ is hidden by default. To unhide see below*
B) Windows: C:\Users\<user folder>\AppData\Local\Adobe\OOBE
NOTE: C:\Users\<user folder>\AppData is hidden by default. To unhide see below*
*see bottom of https://helpx.adobe.com/creative-cloud/kb/unknown-server-error-launching-cc.html for info on unhidding