> For the complete documentation index, see [llms.txt](https://docs.signius.eu/manuals/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.signius.eu/manuals/harmony-desktop-en/prerequisites.md).

# Prerequisites

SIGNIUS Harmony relies on certain prerequisites before it can work properly. 

You'll need

1. To be registered and have a valid account on our signing plattform <https://professional.signius.eu>
2. Have an active Qualified Electronic Signature package with minimum one signatre left. You can obtain them from our shop: <https://signius.eu/product-category/qualified-signatures/>
3. The SIGNIUS Harmony installation package for Windows or MacOS.
4. Administrative rights for Windows as the software needs to be installed with this level of privileges.