The reply below is from a post copied from resident MVP Ronnie Vernon
The error message 8024200D indicates that an important windows update that
is required before installing SP1, has not been installed.
Read the following article and make sure that you have all of the required
updates before you try to install SP1.
Information about Windows Vista Service Pack 1:
http://support.microsoft.com/kb/936330
Windows Vista Service Pack 1 is not available for installation from Windows
Update and is not offered by Automatic Updates:
http://support.microsoft.com/?kbid=948343#method5
A software update is available for versions of Windows Vista that include
the Windows BitLocker Drive Encryption feature:
http://support.microsoft.com/kb/935509
--------------------------------------------------------------------------------
Ronnie Vernon
Microsoft MVP
Windows Desktop Experience
--
Mick Murphy - Qld - Australia
"Bytor" wrote:
> I keep getting prompted to install SP1 when i try it fails everytime and give
> out the failure code 8024200D.I have tryed things like checking memory and
> hard disk but no luck.So its over to you lot the experts Help.