Thank you, it helped me.I had the same problem, the only way to solve it for me was deleting my account and put it back again, Cortana after this worked for me, though it has nothing to do with what she does in windows phone, saludos compis.
I am having the same problem, and I am not sure I follow your suggestion. Deleting my account in the phone?? (like resetting...).
Thanks a lot for your help!
JCP