See the "How to obtain help" section of
For home users, no-charge support is available by calling 1-866-PCSAFETY
(and/or 1-866-234-6020 and/or 1-800-936-5700) in the United States and in
Canada or by contacting your local Microsoft subsidiary. There is no-charge
for support calls that are associated with security updates. When you call,
clearly state that your problem is related to a Security Update and cite the
update's KB number (e.g., KB953297).
Or you can...
Start a free Windows Update support incident request:
The Consumer Security Support home page & Microsoft Update Solution Center
also offer support options
For more information about how to contact your local Microsoft subsidiary
for security update support issues, visit the International Support Web
For enterprise customers, support for security updates is available through
your usual support contacts.
~Robear Dyer (PA Bear)
MS MVP-IE, Mail, Security, Windows Client - since 2002
> I keep getting error Code 0x64C when the automatic update tries to install
> this. I'm running XP Pro. Does it matter that the update installer
> indicates that the file size is 0K?