When I click download on the webpage that I am getting my ebook from Adobe digital Editions opens up and the Setup window opens with it. I click continue then enter in my Adobe Id info and click ACTIVATE. It starts loading. Above the "loading bar" it says "Connecting to authorization server" and then "Activating Computer" and then the last note that appears is "E_ADEPT_REQUEST_EXPIRED http://adeactivate.adobe.com/adept/Activat" and I have the option to cancel or try again. I have tried it over and over again and it gives me the same message. Does anyone know why this is happening and how I can fix it so that I can read my ebook (which is a textbook that I need for one of my classes) much appreciated.