How do I reset the magnet basic app?

[tmxjq]

I accidentally touched the torrent magnet while setting it on the Synology NAS, so does anyone know how to reset the magnet basic app?

[Kolcha]

magnet links handler is an option in your web browser, so look into its settings.
for Firefox for example it can be found in the "General" tab:

[andry81]

This is Windows file association shell feature: https://superuser.com/questions/266268/where-in-the-registry-does-windows-store-with-which-program-to-open-certain-file

If remove it would be something like ask on open.