Configuring preferences and options in Outlook.com
Becca321:
The outlook developers who can fix this issue do not follow this forum.
Please post a feedback response here: https://feedback.live.com/default.aspx?productkey=wlnewmail&scrx=1
... and ask that the developers provide the necessary features to manage the auto-complete list (add, delete, chage an entry).
Also, see this site for more information about this problem:
http://www.dorsetdog.com/outlook-com-delete-auto-complete-entries