You can use this installer to download and install the various binary packages that you need to run KDE applications on MS Windows.

KDE is free and open source so you can build all the applications "from scratch" from their source code; but as a convenience for others, volunteers create these precompiled packages and make them available on the Internet.

To run KDE applications on MS Windows you will have to install this package on your PC, set the application folder, download directory, set the download settings and select the binary packages that you want to download.