Sorry to join this post so late...
So would the following be correct?
We have Win7 64bit.
Using Adobe Customization wizard against Adobe Acrobat Reader.
We do not want adobe installation to modify the default PDF reader as we have many different user scenarios... and non savvy users will be challenged if something was to happen.
I leave the customization wizard settings at: "Default viewer for PDF Files: Installer will decide which product will be the default.
And in my install command lines I put the following....
REM - Install primary Acrobat reader (V.15)
msiexec /i "AcroRead.msi" TRANSFORMS="AdobeXIX.mst" LEAVE_PDFOWNERSHIP=YES /qb
REM - Upgrade Acrobat Reader upgrade (V.2019.010.20091)
msiexec /p "AcroRdrDCUpd1901020091.msp" /qn
Thank you for any and all assistance.
Tony