Not used it myself but I did see this on one site:
Also make sure that protected-view is not enabled.
Procedure:
Open Word or Excel in Office.Click File, Options, Trust Center.Click the Trust Center Settings button.Select the Protected View Tab and uncheck all 3 boxes.Now select File Block Settings and uncheck everything.Click OK.
Perfect, thanks! I dont have it here to hand so trying to explain it to a user who has the issue off campus lol If i had it in my hand i would have gone through all the settings, again, cheers