I need to create an MSI file with a program (downloadable, don't have time for anything else) that will overwrite a system file with a file with an older version on 9x clients. 9x clients do not ...

But if you package MSI files in your software, you can use basic VBScript to create a "shell" object that runs Windows commands, including executing these MSI files.

If the Run As Administrator option for MSI Files is missing in Windows 11/10, then you need to take a look at these Registry keys.

However, I am having limited success with WininstallLE. Seems to be 50/50 that the msi creation actually works. Are there any tips that anybody has for a higher success rate in creating MSI files??

MSI Viewer allows you to view the contents of MSI installer files. MSI Explorer lets you analyze the MSI and give the details of it along with the capability of updating it without rebuilding it.

This file incorporates security and language settings, installation sources and the setup process. If you do not have the installation DVD for MS Office and are therefore unable to update Pro11.MSI ...