I keep getting "Activation Server error code:E_AUTH_NOT_READY" while trying authorize my computer. I'm using the ID pwd that I use to login to Adobe.com

I have the same problem. Do U have an idea?

Hi I was having the same problem using ADE 2.0.

I contacted the LiveChat support (link button did not show when using Firefox 31), which gave me this link. http://helpx.adobe.com/digital-editions/kb/error-e_act_not_ready.html 

After I edited the Registry and then restarted ADE I was able to ReAuthorize my machine.  Hope this works for you.