See Known Issues sections of http://support.microsoft.com/kb/947742
1. Write down what .NET Framework versions are already installed before you
go uninstalling/removing any of them!
How to determine which versions of the .NET Framework are installed and
whether service packs have been applied
2. Now see Resolutions Methods 1 or 2 in
(ignore the title).
If no joy, see this related post by my colleague MowGreen:
Start a free Windows Update support incident request:
Support for Windows Update:
For home users, no-charge support is available by calling 1-866-PCSAFETY 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., KB947742).
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-Windows (IE, OE, Security, Shell/User)
AumHa VSOP & Admin; DTS-L.net
> Both updates fail to install from September auto update.
> System is Win2kpro sp4
> KB947742 error code Ox64C
> KB947748 error code Ox8007064C
> I remember issues with similar updates recently, are these related?