Microsoft did port some versions of Windows to Itanium, so they did not reject it at first.
With poor market demand and AMD's success with amd64, Microsoft did not support itanium in vista and later desktop versions which signaled the end of Intel's Itanium.
With poor market demand and AMD's success with amd64, Microsoft did not support itanium in vista and later desktop versions which signaled the end of Intel's Itanium.