The A msi was successfully upgraded though.  The issue is there are 2 installer 
transactions that are run in sequence.  The first works, the second fails.

It gets difficult to roll back the bundle, because it would need to reinstall 
the previous bundle if the upgrade failed. What if the original media is no 
longer available?  Just a guess, but I am betting this is a known issue that 
just hasn't been solved. The engine strongly tries to make no assumptions, so 
there may be a notification that a custom BA could get to reinstall the old 
version. (I haven't setup a test case to try to verify this.)

Are you using WixStdBA or your own custom BA?

-----Original Message-----
From: Nick Ramirez [mailto:nickra...@hotmail.com] 
Sent: Wednesday, June 26, 2013 11:36 AM
To: wix-users@lists.sourceforge.net
Subject: Re: [WiX-users] Bootstrapper multiple MSI’s don’t rollback to a 
working installed state

How is the MajorUpgrade element scheduled in your MSI? By default it is 
"afterInstallValidate", which does not bring back the old version if there is a 
rollback. See the documentation at 
http://wix.sourceforge.net/manual-wix3/wix_xsd_majorupgrade.htm.





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