Windows Boards

I found this helpful today and though I would post it here:

==================================

"The Windows Installer Service Could Not Be Accessed" error message when you install a program in Windows XP
View products that this article applies to.
Article ID   :   315353
Last Review   :   May 7, 2007
Revision   :   4.5
This article was previously published under Q315353
SYMPTOMS
When you try to install a program, such as Microsoft Plus! for Windows XP or Microsoft Office 2003, in Microsoft Windows XP, you may receive the following error message:
The Windows Installer Service could not be accessed.
This can occur if you are running Windows in safe
mode, or if the Windows Installer is not correctly
installed. Contact your support personnel for assistance.

Back to the top
CAUSE
This issue may occur when both the following conditions are true: