It doesn't work either in Outlook2013 in the way described, but i found a workaround that might be applicable also in Outlook2016:
Goto File-> Account Settings -> Account Settings -> Internet Calender -> New... -> enter the subscription url.
It will show a certificate warning and after confirmation, show the calender in "other calenders".
G’day everyone! Super exciting news coming from the Marketplace. We have now fully rolled out the ability for end-users to submit app requests to admins directly from within the product! No longer ...
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