Strange searches usually come from someone else using a device that's signed in to your Microsoft account, from being signed in to another person's account, or from popular suggestions that aren't your history at all. If you rule those out, change your password and turn on two-step verification.
Check it's really your history
- Is it your account? Look at the account at the top right of bing.com. On a shared or second-hand computer, you may be looking at someone else's history.
- Is it the history page? The drop-down under the search box shows popular searches and suggestions for everyone. Only bing.com/profile/history shows your own history.
Someone else is using your account
Every device signed in with your Microsoft account adds to the same history: a family PC, an old phone, an Xbox, a work laptop, a smart TV. If someone else uses one of them, their searches show up in your list.
- Sign in at account.microsoft.com/devices and remove devices you don't use.
- Check Security > Sign-in activity for sign-ins you don't recognize.
- Change your password and turn on two-step verification.
Malware or a hijacked browser
Unwanted extensions and adware sometimes run searches in the background or redirect your searches. Remove extensions you don't recognize and run a full scan with Windows Security (or your antivirus). Reset your browser settings if your homepage or search engine has changed on its own.
Autocomplete accidents
It's easy to press Enter on a suggestion instead of what you were typing. Those searches are yours, even if you don't remember them.
Clean up and lock down
- Delete the searches you don't recognize, or clear the whole history.
- Sign out of devices you don't control.
- Secure your account as above.
- Consider turning history off on shared devices.
Frequently asked questions
Can someone see my Bing searches from another device?
Yes, if they use a device signed in to your Microsoft account, or know your password. See who can see your Bing search history.
Could the strange searches be ads?
No. Ads don't create entries in your search history. Entries come from searches made while signed in to your account (or, signed out, from that browser).