Configuring preferences and options in Outlook.com
It is an outlook.com (or hotmail) address, correct?
Some of the features are not enabled immediately, but as far as I can recall, automatic replies is enabled from the start.
You can contact outlook.com support - they can take a look at it and make sure it was provisioned correctly.
Log into Outlook.com on the web using a PC or Mac.
Click the ? icon to open the Help menu.
Type a question. Scroll to the end of the research results and click Yes for Still need help?.
How to get support for Outlook.com