Bing, Microsoft's search engine, works similarly to other major search engines in that it helps you keep track of previous searches with a list of recent items typed into the search field. You can easily view your history by looking at the left-hand side of the Bing search results page. If you’re working on a public computer, however, and you’d rather keep some search information private or want to delete that information altogether, Bing allows you to delete, or clear, search history.
Browse to the Bing search engine and click the "Search History" link in the top menu bar. Alternatively, if you have a Bing search results Web page open, locate the Search History section on the left-hand side of the Web page, about halfway down, and click the “See all” link in that section.
Click “Clear” in the Edit History section on the left of the Search History page to remove your recent search history.
Click the “Yes, clear all search history” link to finalise the decision, removing the cookies associated with your Bing searches from the browser. Instead of listing your searches, Bing will display a message confirming search history has been cleared.
To prevent Bing from tracking search history altogether, click "Turn history off" in the Edit History section of the Search History page. Signing in to Bing with a Windows Live ID or logging in to Facebook will make the search history associated with either login available on any computer. Signing off restricts search history to the computer from which you are performing the search.
When you are not signed in to Bing, your Bing history will continue to collect for 28 days unless you turn it off or clear it yourself.