User not activated

I have the same problem...user not activated..nook had a problem where they wanted credit card info to read a downloaded ebook that was authorized from the library. It required a deactivation and reactivation from Barnes and Noble. I did this step and it worked fine..I'm able to download their books. However, I'm still not able to open the books on my nook from the library. I get "user not activated" on the nook. I have tried deleting the adobe file on my computer several times and I'm never prompted to "authorize" my nook as the documentation suggests. I even tried uninstalling and reinstalling adobe digital editions.

What can I do to fix this?

Sep 2016 - I have only recently bought a Nook (Simple Touch Glowlight 4GB) and have had the error, 'User not activated', with 3 of the eBooks I have bought from online retailers.  (I live in the UK and we are not allowed to buy directly from Barnes and Noble !!)

I have been receiving an '.acsm' file then downloading the EPUB file using Adobe Digital Editions.  At this point I can read the book on screen on my iMac but when I sideload it on to my Nook, the Nook does not allow me to read it - 'User not activated'.

I have then used an independent, free, eBook program called, 'Calibre', to load the first, downloaded EPUB file into Calibre's own 'library'.  At this point I go to the Calibre Library folder on the Mac and copy that version directly on to the Nook.

I don't understand what the difference is or why it works - I did wonder if Calibre stripped out the copyright (DRM) stuff from the eBook but I don't believe it can do that.

I hope this helps.

Has you authorize your Reader?