How to replace a file in a msi installer?

Question

I want to replace a single file inside a msi. How to do it?

Answer 1

Use msi2xml.

1. This command extracts the MSI files:

   msi2xml -c OutputDir TestMSI.MSI

2. Open OutputDir and modify the file.

3. To rebuild the MSI run:

   xml2msi.exe -m TestMSI.xml

You need the -m to ignore the 'MD5 checksum test' that fails when an MSIs file(s) are modified.