>Hi All
>
>I have a install script that I have been using for a while. I have a user that has a xppro machine and she gets the following error:
>
>Error 1931 The Windows installer service cannot update the system file msxml3r.dll because the file is protected by Windows. You may need to update your operating system for this product to work correctly.
>
>I am using the full version of InstallShield express v3.53.
>
>Thanks

I don't know anything about InstallShield, but a bit about XP.

Has the user got rights to update the likes of MSXML3R.DLL?

Kev