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(I suspect Windows developers will be less inclined since Kindle for PC is still an option for Windows users. In the long-run, however, getting an e-ink Kindle and using the Download & Transfer via USB option is a better bet - unless a Mac developer is motivated to figure out the new key. Note: De-DRM'ing ebooks from 1.25 & 1.26 is only possible on Kindle for Mac. I plan to experiment with Catalina if I can do so without compromising my Mac. However, it works on High Sierra and Mojave. I say "should" because no one has tested it on Catalina yet (that I'm aware of). Seems that DRM was not removed and that book was placed 'as is' (with DRM) in Calibre's list. Epubsoft Kindle DRM Removal helps you quickly and easily remove azw drm protection from kindle (azw,prc,mobi), then you can convert kindle books to any file. Trying to open it in Calibre's eBook viewer returns error: book could not be loaded. It's a little tricky, but in some - but not all - cases it should also be possible to get the key to successfully remove DRM. Downloaded the book B09QL27RNSEBOK.azw from Amazon Book installs in Calibre (with filename as title) but does not open. Kindle for Mac 1.25 & 1.26 are 64-bit and should run on Catalina. Will any later version of Kindle app allow Calibre to remove DRM? Kindle 1.17.1 will no longer work on Mac when next version of MaC OS is released this fall. I am using Kindle v1.17.1 and current version of Calibre will remove drm and give me an epub format.
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