I had this problem too and fixed it by freeing up more harddisk space on the
drive where VS was installed. Note that the installation requirements for
SP1 include "Recommended hard disk space: 6200 MB".
In case you haven't seen how other people fixed this problem, here's another
suggestion that reportedly fixed this problem for other people ...
Updated "Software Restriction Policies" ...
http://support.microsoft.com/kb/925336
--
Mark_D
"DB" wrote:
> I keep getting an error 0x643 when trying to run windows update and install
> the service pack for Visual Studio.
>
> Any help would be appreciated.
> Thanks