How to install Flux on Windows and start your first download

Choose the right release package

Open the project repository and choose Releases. The application installer is different from the Chrome or Firefox extension ZIP. Download the desktop package as well as the extension matching your browser. Check the release notes for signing status and compare the package checksum if you want to verify its identity.

Connect the application and browser

• Install Flux or extract the complete portable package.
• Launch the desktop application once so the native bridge can register.
• Install and enable the matching extension using the published instructions.
• Grant the requested site and native messaging permissions.
• Refresh tabs that were already open before the extension was enabled.

Start with a normal file

Use New download to add an HTTP or HTTPS file URL, or select a file from your browser. The approval window lets you review the name and destination. Automatic connection selection is a practical starting point. You can also set a speed limit or place the task in the queue without starting it immediately.

Choose a directory with enough space for the complete output. Watch the task’s status, downloaded bytes and history entry. For a clean first test, use a public source with a stable file instead of an expiring account-protected media URL.

If the browser does not connect

Check that both the application and extension packages are current. Open Settings → Browser integration and use the bridge repair action if needed. A second download manager can compete for the same browser event, so review that manager’s capture preference in the browser you want Flux to handle. Installing the desktop bridge does not install or enable the extension for you.