can not install update to computer

I have been able to download this update but it well not install to my computer. I have a HP Pavilion Desktop running Windows Vista. The update is a security update -Microsoft .Net Framework 4 Windows Vista. This update comes up everyday to be installed but it has an error message every time . Code 66A Windows Update has encountered an unknown error.
How can I either install it or make it stop trying to install and failing. Thank you very much for your help and time.

Penny Verner wrote:
> I have been able to download this update but it well not install to my computer.
> I have a HP Pavilion Desktop running Windows Vista. The update is a security update
> -Microsoft .Net Framework 4 Windows Vista. This update comes up everyday to be
> installed but it has an error message every time . Code 66A Windows Update has
> encountered an unknown error.
> How can I either install it or make it stop trying to install and failing. Thank
> you very much for your help and time.
>
>

Unless there is software installed that requires the .NET 4 Framework be
installed in order for *it* to run, *you* have no need for it to be
installed despite Microsoft's pushing it out for *their* benefit.

If software is installed that requires the .NET 4 Framework be
installed, then suggest you attempt a Repair of it first from within
Programs and Features in the Control Panel.
Locate Microsoft .NET Framework 4 in the list of Installed Programs,
click once on it to highlight it, then click the Repair option on the
Menu bar.
Wait until the Repair operation is finished and then see if the update
will install.

If no joy then you will need to uninstall .NET 4, restart, then
reinstall it again.
If it can't be uninstalled from Programs and Features then you can run
the .NET Framework Cleanup tool to remove it -
http://blogs.msdn.com/b/astebner/arc...8/8904493.aspx


MowGreen
================
*-343-* FDNY
Never Forgotten
================

"Security updates should *never* have *non-security content* prechecked