As I couldn't get any logs or error message I'll describe what I've experienced, I welcome any guidance that would help me provide better feedback for this matter.

1. Installed Atom on Windows 10 (64 bits)
2. Installed Proton
3. Proton shows initializing modal

At 3, it lists the packages about to be installed but they get barely listed really fast, with OK status and at the end are not even installed. I suppose it's some kind of privileges issue.