HELP
When you download a Luna app on Windows, you may see a SmartScreen warning like "isn't commonly downloaded — make sure you trust this file before opening it." This page explains why and how to proceed safely.
Microsoft SmartScreen flags any new executable that hasn't built up a download reputation, or that isn't signed by a major Certificate Authority. Luna apps are personal open-source projects with full source on GitHub, not yet signed by a CA. The warning is not specific to Luna — every new independent Windows app sees it until enough downloads occur or a code-signing certificate is purchased.
Every Luna release on GitHub publishes a SHA-256 hash. You can verify the file you downloaded matches that hash before running it. Open PowerShell in the folder where the installer is, and run:
Get-FileHash LunaX-Setup-v0.1.1.exe -Algorithm SHA256
Compare the output with the hash listed on the GitHub release page. If they match, you have the exact file we published — bit for bit.
→ View latest LunaX release (with hashes) on GitHub
Antivirus tools sometimes block the download outright. If that happens, retry from a different browser, or temporarily allow the file in your antivirus settings, then verify the SHA-256 hash before running.
Code-signing certificates from a public CA cost roughly $250–400 per year. Luna is a personal labour of love, not a commercial product, so we haven't taken on that recurring cost. We're working on Microsoft Store distribution as the long-term solution — Store apps are signed by Microsoft and trigger no warnings.