I am presently trying to automate patch builds for my product code, and I am using msimsp.exe with the following command-line

Msimsp.exe –s  -p -l 

It pops up a confirmation dialog saying –
Target ProductVersion is greater than the Upgraded Image; do you want to proceed anyway?

I need to know-
  1. Why does this pop-up come? I am unable to figure out.
  2. How do I suppress this?


Set AllowProductVersionMajorMismatches in Properties Table of PCP to confirm Product version mismatch. See Properties Table (Patchwiz.dll)

Content credit also belongs to

[Author: Robert Flaming]
This posting is provided "AS IS" with no warranties, and confers no rights. Use of included script samples are subject to the terms specified at