You might click on magnet link in Firefox and get: “Firefox can’t find the file at magnet:?xt=urn:btih:aa4b9b…”.
Resolution:
- Locate file mimeTypes.rdf, it should be in c:\Users\user\AppData\Roaming\Mozilla\Firefox\Profiles\something.default\.
- Open it with some text editor, whichever you use.
- Find the line that contains “magnet”.
- For deluge it should look like this, for other Torrent clients replace with appropriate path (for example, for Vuze use \Vuze\vuze.exe):
<RDF:Description RDF:about=”urn:scheme:externalApplication:magnet”
NC:prettyName=”deluge.exe”
NC:path=”C:\Program Files (x86)\Deluge\deluge.exe” />