You have posted two cut screenshots, which makes hard to understand what might happening, because some text is cut.
However, from what I see, it is downloading something so, clearly "something" is happening. Try the usual suggestions:
- Configure the antivirus to add the whole Addon Manager folder to the antivirus Exclusions.
- Be sure to disable any firewall
- Reinstall the FSDT Installer again. If that doesn't work, restart Windows after the installation and try again.