Download Castforge for Windows

When Windows shows SmartScreen

Castforge is a new app and Windows SmartScreen builds reputation over the first 30-60 days of installs. While reputation builds, you may see a blue "Windows protected your PC" dialog the first time you run the installer.

Here's what to do:

1. Click More info in the blue dialog.
2. Click Run anyway.
3. Castforge installs as normal. The dialog will not appear again on this machine.

Want to verify the binary yourself? Open PowerShell and run:

signtool verify /pa /v Castforge_x64-setup.exe

The cert chain is signed by Castforge AI via Azure Artifact Signing (or SSL.com OV cert as fallback). The full signing story lives at /legal/security.

What gets installed

The Castforge installer is a standard Windows installer. It installs to %LOCALAPPDATA%\Castforge (no administrator rights required) and writes its local data (project history, preferences, sign-in session) under %APPDATA%\Castforge. Auto-updates are handled in-app, Castforge checks for new versions on launch and prompts you before downloading. To uninstall, use the standard Windows path: Settings → Apps → Castforge → Uninstall.

Older versions and changelog

Release notes for every version are on the changelog. All older signed installers stay available on the GitHub releases page if you need to roll back.