# 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 2. Have an active Qualified Electronic Signature package with minimum one signatre left. You can obtain them from our shop: 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. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.signius.eu/manuals/harmony-desktop-en/prerequisites.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.