A new issue has cropped up when it comes to downloading Kindle ebooks from the Manage Your Content page at Amazon.
The problem occurs when trying to download purchased ebooks for USB transfer when using the Chrome web browser—ebooks simply will not download. There are reports of the problem affecting the Firefox browser as well.
Amazon will probably get the problem fixed soon, but in the meantime there are a couple of workarounds to get your Kindle ebooks downloaded for USB transfer and backup.
Quick Fix Workarounds
1. One option is to just use a different web browser. The issue might affect other browsers at some point too but you could try different ones. There are reports of Kindle book downloads still working normally with Microsoft Edge.
2. You can change a setting with your web browser to allow insecure content on Amazon’s website. To do this on Chrome, click the lock icon next to Amazon’s web address while viewing Amazon’s website, then select Site Settings > Insecure content > Allow.
After you do that you’ll be able to download Kindle ebooks normally again. Note that the setting only applies to Amazon’s website, not other websites.