[wix-users] Allow multiple installs of our app on a single system

[Rob Mensching]

My bad. I think I misread the question. Jacob has the better answer.

_____________________________________________________________
 Short replies here. Complete answers over there: http://www.firegiant.com/


-----Original Message-----
From: Hoover, Jacob <Jacob.Hoover at greenheck.com> 
Sent: Friday, October 26, 2018 12:02 PM
To: WiX Toolset Users Mailing List <wix-users at lists.wixtoolset.org>
Cc: Rob Mensching <rob at firegiant.com>
Subject: RE: [wix-users] Allow multiple installs of our app on a single system

ProductCode, UpgradeCode and Version are the key bits to look at...

Define the behavior of what an install should do when older version (with the other installer) is detected, and that will define what you need to change to make it happen.

-----Original Message-----
From: wix-users [mailto:wix-users-bounces at lists.wixtoolset.org] On Behalf Of Rob Mensching via wix-users
Sent: Friday, October 26, 2018 12:26 PM
To: WiX Toolset Users Mailing List <wix-users at lists.wixtoolset.org>
Cc: Rob Mensching <rob at firegiant.com>
Subject: Re: [wix-users] Allow multiple installs of our app on a single system

https://docs.microsoft.com/en-us/windows/desktop/Msi/installing-multiple-instances-of-products-and-patches - WiX can help some with the InstanceTransform element but there is still a good bit "left to the interested reader".
_____________________________________________________________
 Short replies here. Complete answers over there: http://www.firegiant.com/


-----Original Message-----
From: wix-users <wix-users-bounces at lists.wixtoolset.org> On Behalf Of Todd Hoatson via wix-users
Sent: Friday, October 26, 2018 10:17 AM
To: wix-users at lists.wixtoolset.org
Cc: Todd Hoatson <todd.hoatson at gmail.com>
Subject: [wix-users] Allow multiple installs of our app on a single system

Hi,
  I have a working installer for our app, coded in WiX.  The previous version of our app used a different installation tool.

  Now, if we try to install our newest version on a system where the previous version is already installed, an error message appears, requiring the user to uninstall the previous version first.

  We would like to eliminate this requirement.  We feel it is unnecessary.
Since I didn't put anything explicit in the WiX code to cause this, I'm unsure how to proceed.

  Any suggestions?  Our installer uses WixUI_Mondo, if that makes a difference...

  Thanks for any help you can offer.

Todd Hoatson
Mobile: 763-291-3312
Email:   todd.hoatson at gmail.com
www.linkedin.com/in/toddhoatson