=============== Troubleshooting =============== BlackBerry OS 10.2 ------------------ BlackBerry OS up to 10.2.2102 does not accept a URL with protocol ``https://`` in front of the server address. It will always tell you that it cannot login on your server. So instead of writing:: https://example.com/remote.php/dav/principals/users/USERNAME/ in the server address field, you have to write:: example.com/remote.php/dav/principals/users/USERNAME/