I just had this issue after a passsword reset/update. I just wanted to thank the Adobe support team for the solution. Renaming the OOBE folder worked and was exactly what I needed to do.
My question is, was it the password reset or the update? If it was the password reset, shouldn't ACCD detect that a password reset has occured and prompt for log in? Is this going to happen each time I reset my password? If so, that is quite inconvenient.
For those that are having this issue, the solution is a bit buried, but you shut down Creative Cloud Desktop, rename the folder OOBE (or the file inside of it) to .old and then restart Creative Cloud Desktop.
http://helpx.adobe.com/creative-cloud/kb/unknown-server-error-launchin g-cc.html