Your history for all the things you search for using Bing are stored on your Microsoft account, so head on over to your Microsoft account's privacy settings, and sign in. After signing in, you'll see your account's Privacy dashboard. Scroll down a bit to the "Search History" section, and then click "View And Clear Search History" button.

Ensure that your browser and OS are up to date. You may want to restart your computer in Safe Mode for good measure. Log out from all your devices, then log back into your Microsoft account. Clear your cookies and cache, as sometimes, cookies can interfere with the deletion of your search history.

Go to https://account.microsoft.com/privacy/.Please make sure to sign in to your Microsoft account. Scroll down to Search History and simply click on 'Clear seach history'.

For us to resolve your concern, kindly follow the steps below to delete your search history by directly accessing the page. Go to the Bing homepage and click on Search History at the top of the page or go to the following link: https://www.bing.com/profile/history/delete