Greetings, There is no point in losing a legal Windows license in order to play with Koha in development. Install virtualbox. (www.virtualbox.org<http://www.virtualbox.org>) Download the latest Debian ISO. - I typically recommend using torrents for this, because internet connections are lousy sometimes. http://www.utorrent.com/intl/en/downloads/win http://cdimage.debian.org/debian-cd/8.6.0/amd64/bt-cd/debian-8.6.0-amd64-net... (64-bit) http://cdimage.debian.org/debian-cd/8.6.0/i386/bt-cd/debian-8.6.0-i386-netin... (32-bit) - I typically stick with the 64-bit version. I then create a VM based on the ISO in virtualbox. And then once that VM is up and running, I treat it as my machine to install Koha. I like to use Putty (https://the.earth.li/~sgtatham/putty/latest/x86/putty-0.67-installer.msi) to connect with the VM, because it makes cutting and pasting easier. I also install sudo on the VM $ su - {root password} # apt-get install sudo ... # adduser {user name} sudo # exit $ exit -- log back in. That way, I can follow the installation instructions more easily. I too have tried various native installations of Koha to Windows, but given the technical issues, running a VM or losing your Windows is the only way currently. My issue has always been a lack of Perl libraries. I suspect there exists a refactoring which would run natively, but that would be a huge undertaking for such a small gain. GPML, Mark Tompsett