Installation

import { Aside } from ‘@astrojs/starlight/components’;

System requirements

Requirement	Minimum
OS	Windows 10 (64-bit) or Windows 11
RAM	8 GB (16 GB recommended for multiple browser profiles)
Disk	2 GB free (Chromium engine adds ~300 MB)
Network	Required at startup for license validation

Download

1. Go to the GitHub Releases page.
2. Download the latest Fantommind_x.y.z_x64-setup.exe installer.
3. Run the installer — it is a standard NSIS one-click install. No admin rights required for user-mode install.

Windows SmartScreen may warn on first run because the installer is newly code-signed. Click **More info → Run anyway** to proceed. The certificate chain is valid.

First launch

On first launch, Fantommind starts the Python sidecar and opens the desktop dashboard. You will see a License Required screen.

Activation

1. If you haven’t purchased yet, click Buy License to open the Polar checkout.
2. After purchase, Polar sends a license key email (check spam if not received within 2 minutes).
3. Copy the license key from the email.
4. In the app: Settings → License → Paste key → Activate.
5. Activation contacts Polar’s API and binds the key to your machine’s hardware fingerprint.

Keep the license key email. If you need to move to a new machine, you'll use the key again after deactivating the current machine from the [customer portal](/account).

Verify installation

After activation, the dashboard home page shows:

• License status: Active
• Machine fingerprint: [hash]
• Sidecar version: x.y.z

If any of these show errors, see Troubleshooting.

Updating

Fantommind checks for updates automatically on startup. When an update is available, a banner appears in the top bar. Click Update now — the installer runs silently and restarts the app.

To update manually: download the new installer from GitHub Releases and run it over the existing installation.