How do I delete my YouTube activity history?
This includes both video views and search queries. To delete them, do the following:
1. On the YouTube home page, go to “History”> “Action Tracking”.2. Next to the action search field, click on the ellipsis.3. Click on the link “Delete actions for a certain period”.
4. Choose the appropriate item: “Last hour”, “Last day”, “All Time” or “Custom Choice”(period is indicated).5. Confirm the action by clicking on the button “Delete”.