Perhaps someone can help me with how to solve this.
MS have done it again. They have added a feature in outlook auto-complete to show 2 list, one is suggestion. WHY is this needed ? beats me. What they have done is mess it up. They do not show the "Delete Icon" and right clicking on one just selects it (That should never be a right click option). So there is no way to delete the email address held in the auto-complete cash. Very frustrating.