This is not the exact same error but the article has good troubleshooting
steps for problems with the Windows Installer Service. Give the resolution
steps a shot. There is also a link to download & install Windows Installer
2.0.

"Error 1719. The Windows Installer service could not be accessed" error
message when you try to add or remove a program
http://support.microsoft.com/?kbid=315346

PattyL

"Robert K" wrote in message
...


I am using Win 98. I have just tried to install Norton Anti Virus over
the
top of Anti Virus 2004 using their automatic installation proceedure. I
get
part way through the process and then the message "The setup was unable to
update the MSI System component" appears and it refers me to Microsoft for
help. I have had a look at the FAQs but can't find anything that helps.

I'd be very grateful for any help anyuone can offer with this problem.

Robert