Hello - I made a mistake and unthinkingly changed the default app to open in response to my clicks on mailto links in Firefox. I've tried to change it back to Outlook. I've managed to include Outlook in the list of apps which come up when I click a mailto link, and ticked it as the default, but the message "Navigation to the webpage was cancelled" comes up as an Outlook window. How can I get it to open a new message in Outlook with the email address in the 'To' line, as it was before?

Regards - Phil Sheppard