Thread: Epub without DRM, but "not authorized to open"
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Old 10-03-2024, 11:54 AM   #6
JSWolf
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Posts: 80,025
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Join Date: Nov 2006
Location: Roslindale, Massachusetts
Device: Kobo Libra 2, Kobo Aura H2O, PRS-650, PRS-T1, nook STR, PW3
Quote:
Originally Posted by koboist View Post
A friend got the "not authorized to open" message on their Kobo Clara 2E (tested firmware versions 4.35 to 4.38) and asked me to test that epub on my Kobo Glo. I was able to read the epub just fine. I also inspected the file, but there was no indication that it contained any kind of DRM. Both devices have never enabled WiFi.

Why is the Kobo Clara 2E not authorized to open that epub?
If this ever happens again, load the ePub into the calibre editor and use epubcheck (editor plugin) and the editor's error checker. If there are errors, fix them and then load the ePub again.
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