For some reason, I am unable to open http, https type links when using Windows Mail in Vista. (I am running Vista Home Premium, 32bet, all updates.) I went to the default programs - associate file type or protocol rolled down to protocols and found http, https, ftp etc. It had Unknown Application for these. I clicked on it, but everything was faded out in the pop-up window and I was unable to associate Internet Explorer with these protocols. Now when I run Internet Explorer, I am certainly able to go to other pages which begin http or https. So what is going on? Why can't I open these files within Windows Mail?