I am running bing as my homepage. At the top of the daily bing picture are the pull down menus for Web, Images, Videos,

etc. At the end of the list is OUTLOOK.COM. I click here and I get immediate access to an open page of my "inbox", showing

all the new emails I have received. I DO NOT have to enter any usernames or passwords to get in, the inbox page automatically

loads itself. I am going on holidays in a week and would like to lock down this feature until I return.

How do I prevent OUTLOOK.COM from opening if an unauthorized user tries to open my email...?