I am trying to add a French Canada Holiday Calendar to my Outlook email account's calendar  and do the steps explained in your help section, but I get the message

 

L'URL de calendrier que vous avez saisie n'est pas valide. Vérifiez-la et réessayez.  Translated it means the Calendar URL that you have entered is not valid, check it and try again. 

 

Help please!