Hi Pasquale,
I was looking for an answer to the same problem. Same version number Vista.
Same error code 0x8024400a when I check for updates for both Vista and
Windows Defender.
Greets, Ron
"Pasquale" wrote:
> Hi to all,
>
> anybody have this problem?
>
> When i click on "Check for Updates" in Control Panel - Security - Windows
> Update window, the system perform a check for 2-3 seconds and reports the
> error 8024400A. On the help guide, there is nothing.
>
> How can i fix it?
>
> I cannot download/install Vista and/or Windows Defender updates.
>
> Thanks!!
>
>