http://forums.adobe.com/people/boneliaI would like to inform you that This error is caused by one of, or some combination of, the following three system settings
1. incorrect clock time.
2. incorrect date.
3. incorrect time zone.
When you download an PDF or epub, the Adobe activation records timestamp information from the Adobe activation server. This information is stored inside the book. When you attempt to open the book, this information is compared to your current system information. If your system has an incorrect time/date/time zone, then the activation server disallows the request and you cannot read the book.
Solution ) Carefully check the machine's system time, date, and time zone they should be correct according to your location.
I hope this will help you.
I have the same problem and my system's date is ok, I just can't activate the program... has anybody got over that problem yet?
I checked my time zone and it was the source of the problem. I can now open the program but the books still stay blank, what am I doing wrong?
I'm getting this error too: E_ADEPT_REQUEST_EXPIRED http://adeactivate.adobe.com/adept/Activate 2011-10-13T21:38:01-07:00%20(1318567081000)%20is%20before%202011-10-14T09:09:59-07:00%20( 1318608599730)
I've checked the time on my computer and it is correct. Any suggestions?