In attempting to avoid adding something to Task Scheduler, I am trying to set a reminder using the Reminders button in the Windows Live Mail  Calendar ribbon.  (Version 2012 Build 16.4.3505.0912, which I realize is not the lastest v., but as Build 16.4.3508.0205 presented problems, I reverted to this build - thankfully I always archive the stand-alone installer "wlsetup-all.exe" when I find new versions deployed.) 

I find that clicking this button invokes redirection to my Outlook.com online calendar, and that redirects to a Server Error 404 page with the message "We can't find that page"   Judging from the original url invoked before redirection (http://calendar.live.com/calendar/WLAlertsSettingsRedirector.aspx), it would appear this is not a problem specific to me or to this box (which I believe I've confirmed by trying it from others, virtual & physical), but rather a lack of functionality in the service itself.  Any advice will be warmly appreciated.