[gbm]

Originally Posted by kovidgoyal

Works in my windows 10 machine. The change in 2.49 was that is started using https, so possibly there is some missing root/intermediate certificate on your machines?

Spoiler:

Microsoft Windows [Version 10.0.10240]
(c) 2015 Microsoft Corporation. All rights reserved.

C:\Users\*******>calibre-debug -g
calibre 2.49  isfrozen: True is64bit: False
Windows-8-6.2.9200 Windows ('32bit', 'WindowsPE')
('Windows', '8', '6.2.9200')
Python 2.7.9
Windows: ('8', '6.2.9200', '', 'Multiprocessor Free')
Qt: Untested Windows version 10.0 detected!
Successfully initialized third party plugins: DeDRM && Barnes & Noble && Quality Check && EpubSplit && KindleUnpack - The Plugin && Goodreads && Webscription && Diaps Editing Toolbag && Generate Cover && Baen && Modify ePub && Hyphenate This!
Starting up...
Failed to check for plugin update: <urlopen error [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:581)>
Started up in 14.20 seconds with 2738 books

You are correct a missing cert.

Now how to get it updated?

Originally Posted by PeterT

What happens if you open that URL in a web browser/

I can download the json file.

If I use open with calibre.exe it downloads as a new ebook.

For me this is not that big of a problem scene it is my windows tablet.

bernie