I found this one of the thread. I am going to try this.. Thought it will help
you also
This is what worked for me:
http://support.microsoft.com/default.aspx/kb/925336
Cheers.
JeffS
"JeffS" wrote:
> Yes, actually...
>
> The next day, I downloaded the SP1 (the full, do-every-version one), and
> tried running that manually. Same result. So, it's not an Automatic Updates
> problem.
>
> A message in the Event Log (or, an MS web page linked to from there)
> indicated a failure to confirm the installer package was not tampered with,
> possibly due to a resource shortage. Well, I have plenty of unallocated
> memory and drive space, but there are other resources...
>
> I found that by turning off the Local Policy (just for administrators) for
> the verifcation, the installation would proceed.
>
> I'll see if I can dig up the How-To for that...
>
> Cheers.
>
> JeffS
"Alex K." wrote:
> I tried to install VS 2005 SP1 using Windows Update.
> SP downloaded OK but installation failed with error code = 0x64C.
> I did it twice with the same result.
> Any ideas how to fix this?
>
> Thank you