Patching becomes more difficult whenever you change the ProductVersion.
> From: chr...@iswix.com
> To: wix-users@lists.sourceforge.net; wix-users@lists.sourceforge.net
> Date: Tue, 6 Aug 2013 14:01:04 -0700
> Subject: Re: [WiX-users] Versioning on small updates
>
> Can someone explain to me the rational behind the definition of a "small
> update"? My CM background has never liked the though of shipping a new MSI
> that had the same ProductVersion as a previous MSI. Even if the PackageCode
> GUID is different. It just doesn't make sense to me.
>
> ----------------------------------------
> From: "David Watson" <dwat...@sdl.com>
> Sent: Tuesday, August 06, 2013 10:49 AM
> To: "General discussion for Windows Installer XML toolset."
> <wix-users@lists.sourceforge.net>
> Subject: Re: [WiX-users] Versioning on small updates
>
> You need to update the file version to allow windows installer to know
> whether or not to overwrite any existing file.
> http://msdn.microsoft.com/en-us/library/windows/desktop/aa368599(v=vs.85).asp
> x
>
> I don't think the string version is used but I always keep them both in sync
> anyway.
> Windows installer honours and recognises all four parts of file versions (you
> are correct that it only recognises the first 3 parts of msi product
> versions).
>
> -----Original Message-----
> From: Nicolás Alvarez [mailto:nicolas.alva...@gmail.com]
> Sent: 06 August 2013 06:42
> To: wix-users@lists.sourceforge.net
> Subject: [WiX-users] Versioning on small updates
>
> According to the MSDN documentation, small updates are for small fixes that
> don't change the product version. But I can't find definite information on
> what to do with *file* versions. Do I still need to increase the file version
> (in the VERSIONINFO resource) of Win32 PE files that I modify in a small
> update patch?
>
> If yes, is that the numeric FILEVERSION, the string FileVersion, or both? And
> can I bump only the 4th component, or does Windows Installer only take the
> first three into account? (Perhaps I'm mixing things up and that's only for
> MSI product versions, not file versions...)
>
> --
> Nicolás
>
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