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How do I get Adobe Digital Editions to open my downloaded Library books? It is giving me this message:
Error getting License. License Server Communication Problem:
E_AUTH_BAD_DEVICE_KEY_OR_PKCS12
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I had this problem on a Mac, using OSX and Safari, after an upgrade. I tried various suggestions, and in the end I fixed the problem by deauthorising and reauthorising ADE using instructions for a related issue ( "E_AUTH_NOT_READY") which you can find on the helpx.adobe.com site at the following link: Activation errors This link gives instructions for Mac OS and Windows XP/Vista/7 including what to do if the standard method (CMD/Shift/D on Mac, or CTRL/Shift/D on PC) does not work. Good luck!