How do I clear my Viewing History in YouTube ?

To clear your Viewing History:

• Login and click your username located in the top right corner of the page. Select Video Manager from the drop-down menu that appears.
• Click the History tab in the left column. There you will see all the videos you have recently watched.

Once in the History tab:

• To delete single videos from your viewing history, click the check-box on the left of the video(s) in question and then click Removeat the top of the page.
• To delete ALL videos from your viewing history, click Clear all viewing history at the top of the page.
• To pause your viewing history, click Pause viewing history at the top of the page.