Firefox uses wrong app for mailto: links
On an XP system: When Firefox fails to regard Thunderbird the “Default Mail Application” (even though you set that elsewhere) the problem may be solved by:
- Opening the Control Panel
- Opening the Folder Options
- On the File Types tab, find the (None) URL:MailTo entry
- Click the Advanced button
- In the Actions window, you should see the entry: open
- Click the Edit… button
- Set the Application Used to Perform Action to the correct path of your Thunderbird as:
“C:\Program Files\Mozilla Thunderbird\thunderbird.exe” -compose “%1″