My colleague at work has a problem changing the default font in Word 2010. He is running Windows 64 bit, with Office 2010 64 bit too. He has followed the instructions numerous times to change the default font from Calibri size 11 to Arial size 10 (which is the default in all his other documents). Word reports that the change has taken place but when creating a new document, it reverts to Calibri font 11!
I have managed to change the font, now to Arial by changing and moving a Normal.dotm file but the font size remains 11.
The same type of setup exists for other users, but they can change their default font, and it sticks!
I think that removing all the Normal.dotm files on the machine should fix the problem, but I don't know where they are stored, nor how many there are! Office seems to want to "heal itself" -
FYI- Office 2007 was installed previously, as well as Project 2007 std (which is still installed!