One possible reason is that it takes too long time between downloading .acsm file and fulfilling book, which makes the fulfillment ticket expired. The expiration time depends on the cph.org. It could be from couple of minutes to even couple of hours. You may check with cph.org.
The other possible reason is that your computer time is not correct. Please be sure that your computer is set to correct date, *time*, and time zone. I recommend you to set your computer time auto sync with Internet time server.
This error occurs if the computer time, date, and time zone does not match the time/date/zone where you are currently staying.
Could you please check whether the computer time, date, and time zone match the time/date/zone where you are staying currently ?
I'm having the same problem as Phil and am also frustrated. I have a new computer with Windows 8, have checked the time and time zone and both are correct. I have downloaded books from my local library, but have not been able to drag them into DE. I get the same error message. Can somebody please help with this? I've found no way to communicate directly with Adobe.
My old computer ran on Windows 7 and I never had any problems with it.
I am having the same problem. Unauthorized and reauthorized device. My computer's Time, Date, Timezone are correct for my location. Is there some other time, date, timezone setting that needs to be in sync? Thanks.
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I just had this problem with "licence expired" error message. I found that I hadn't dragged the .acsm file to ADE quickly enough. I had downloaded two books from the public library but had waited a couple of days to put them in ADE (and on my Kobo reader). Just now I downloaded them again and immediately dragged them to ADE and it worked fine.