In what way was it messy when removing ? Windows Installer should normally be
able to handle that.

-----Original Message-----
From: Hans ter Horst [mailto:hoshis...@gmail.com] 
Sent: 14 November 2012 16:06
To: General discussion for Windows Installer XML toolset.
Subject: Re: [WiX-users] How to prevent the same MSI file to be executed more
than once at the same time?

How would I go about to stop even the initial phase from being executed at
the same time?
To explain, in our case different features were selected in two incarnations
of the same installer and both were installed and the result was very messy
when trying to uninstall. We would certainly like to prevent users from doing
this even if everybody agrees that it was done by accident and not
intentionally.


On Wed, Nov 14, 2012 at 4:52 PM, Peter Shirtcliffe
<pshirtcli...@sdl.com>wrote:

> I think you can be in the non-elevated portion of the process multiple 
> times
> - the mutex only protects the execute sequence, where the system is 
> being modified.
>
> -----Original Message-----
> From: Hans ter Horst [mailto:hoshis...@gmail.com]
> Sent: 14 November 2012 15:47
> To: General discussion for Windows Installer XML toolset.
> Subject: [WiX-users] How to prevent the same MSI file to be executed 
> more than once at the same time?
>
> I get reports that people managed to have our installer open several 
> times at the same time by accidentally clicking on the MSI file again 
> while the same installer was already open. I seem to recall that is 
> normally not possible due to the Microsoft installer MUTEX but somehow 
> that seems to be missing.
> I'm using Wix 3.6, any suggestions?
>
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