Epub without DRM, but "not authorized to open"

koboist · Today, 02:00 AM

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?

Aleron Ives · Today, 03:35 AM

Reboot the Clara. That bug pops up now and then. It seems to be a problem with RMSDK (the EPUB reading engine), and there's probably nothing wrong with the book.

koboist · Today, 05:39 AM

Thank you. We had already tried rebooting, deleting/re-adding the epub and flashing different firmware versions. It did not help. In the end we tried a factory reset and that actually helped.

Weird bug ...

Sirtel · Today, 06:17 AM

Quote:

Originally Posted by Aleron Ives

Reboot the Clara. That bug pops up now and then. It seems to be a problem with RMSDK (the EPUB reading engine), and there's probably nothing wrong with the book.

Hmm. I've never actually seen this bug, and I read epubs on my Libra 2. I've read about it happening here, though. I wonder why it has not happened to me?

Today, 02:00 AM	#1
koboist Junior Member Posts: 3 Karma: 10 Join Date: Aug 2023 Device: kobo glo hd	Epub without DRM, but "not authorized to open" 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?

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Today, 03:35 AM	#2
Aleron Ives Wizard Posts: 1,373 Karma: 16297052 Join Date: Sep 2022 Device: Kobo Libra 2	Reboot the Clara. That bug pops up now and then. It seems to be a problem with RMSDK (the EPUB reading engine), and there's probably nothing wrong with the book.

Today, 05:39 AM	#3
koboist Junior Member Posts: 3 Karma: 10 Join Date: Aug 2023 Device: kobo glo hd	Thank you. We had already tried rebooting, deleting/re-adding the epub and flashing different firmware versions. It did not help. In the end we tried a factory reset and that actually helped. Weird bug ...

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