Thanks, that's very helpful.

Joakim Hårsman
 
Head of development, Profdoc Care
+46-8 440 93 78
http://www.profdoc.se

> -----Ursprungligt meddelande-----
> Från: Sebastian Brand (Instyler Software) [mailto:wix+us...@instyler.com]
> Skickat: den 29 september 2009 15:23
> Till: 'General discussion for Windows Installer XML toolset.'
> Ämne: Re: [WiX-users] Removing old version not installed via MSI
> 
> Hello,
> 
> I'd recommend to following:
> First, use a <RegistrySearch> or <FileSearch> to find the existing product
> and installation path. The found value is stored in a Property.
> Then, if that property is set (=old version exists), show a dialog to warn
> the user. On that dialog run a Custom Action that calls unwise (maybe
> silently).
> 
> Hope this helps.
> 
> Best regards,
> Sebastian Brand
> 
> Deployment consultant
> E-Mail: sebast...@instyler.com
> 
> Instyler Setup - Creating WiX-based MSI installations, elegantly.
> http://www.instyler.com
> 
> 
> 
> 
> -----Original Message-----
> From: Joakim Harsman [mailto:joakim.hars...@profdoc.com]
> Sent: Tuesday, September 29, 2009 15:14
> To: wix-users@lists.sourceforge.net
> Subject: [WiX-users] Removing old version not installed via MSI
> 
> I'm in the process of migrating an installer that used to be built with
> Wise
> to an MSI built with Wix.
> 
> I'd like for the new installer to detect and automatically remove old
> versions of the product if present. Is there an easy way to do this? As
> far
> as I can tell RemoveExistingProducts and the Upgrade element won't help
> because they only work if the product you want to remove was installed
> with
> Windows Installer.
> 
> What's the best way to solve this, do I just create some sort of Custom
> action that removes files and registry entries manually using say
> RemoveFiles? Do I call the unwise.exe (the standard way the old version is
> uninstalled)?
> 
> Joakim Hårsman
> 
> Head of development, Profdoc Care
> +46-8 440 93 78
> http://www.profdoc.se
> 
> 
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