A family of Microsoft word processing software products for creating web, email, and print documents.
Hi,
Thank you for posting in Microsoft Community.
Since your issue involves with disabling the AutoComplete functionality (Word 2010) on Enterprise wide computers using GPO settings, you may also post your question in TechNet forum for Word IT Pro mentioned below.
http://social.technet.microsoft.com/Forums/office/en-US/home?forum=word
Hope the link provided is helpful.
Thank you.