wrote:

word cannot open the document: user does not have access privileges
The above error message is occuring on a users computer when he
attempts to open a word or excel attachment directly from an outlook
email message.
This is occuring on only some Word and Excel attachments, not all.
Other Word and Excel document attachments open directly from the
Outlook emal message without any problem.

Try emptying the Outlook Secure Temp Folder.
http://www.howto-outlook.com/faq/securetemp.htm
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Brian Tillman