ISO file or open it with 7-Zip and extract the whole 'Installers' sub-directory somewhere on your computer and then install Orca-x86_en-us.msi. ISO package, so that I can install only Orca from in it. I've used currently the latest version Windows 10 SDK (1.0) and downloaded the. It is available from MS and free to download on their site - just search for it. There is a MS tool called Orca, which allows editing of MSI installers and it is part of Microsoft Windows Software Development Kit (SDK). I'm not sure that I can post here any links to external sources, so I'll describe the way I've installed Calibre 5.5 64 bit edition MSI installer on my Win7. I don't want to go into more details or discussions why I'm staying on Win7 or whatever, but just want to share the workaround I've found for myself and that it works excellent for me, so if someone else wants to try on his own risk - below is the best solution for me.

I'm sure there are still many people like me that for many reasons are staying on Win7 and in the same time want to use latest version of Calibre, which provides new features, fixes and etc.

I wanted to post my findings in the thread 'Windows 7 compatibility excessive restriction', but it seems closed, so I couldn't do that. In short I've got here while searching for a convenient way to upgrade Calibre from version 4.23 to the latest 5.5 on Windows 7. First I'd like to say a big 'Thank you!' to the author and anyone who contributed to Calibre project for the great software!

Calibre download windows 7 64 bit