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Editorial Team
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Asked: 2026-06-14T12:46:55+00:00

Using the commandline I can execute an ‘msi’ file like this: myProgramm.msi myProperty=abc In

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Using the commandline I can execute an ‘msi’ file like this:

myProgramm.msi myProperty="abc"

In my wxs file I want to set myProperty (for example to ‘xyz’) only if it is not defined.

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  1. Editorial Team

    No, You should use this:

    <SetProperty Id="P.IP" 
             After="AppSearch" 
             Sequence="first" 
             Value="SomeValue">NOT P.IP</SetProperty>

    I changed Sequence to ‘First’ – it will execute only once: either during InstallUISEquence (if it executes) or during InstallExecuteSequence (otherwise – silent mode). But maybe you really need setting property in both sequences – you should decide. If you want to specify properties from command-line, you can consider using silent mode run: 

    msiexec  /i setup.msi /qn /lv*x install.log P.PASSWORD="xxx" P.IP="192.168.1.1"

    or basic UI mode:

    msiexec  /i setup.msi /qb /lv*x install.log P.PASSWORD="xxx" P.IP="192.168.1.1"

    Also I would recommend reading Rob Menching’s article on Remember property pattern – it relates to registry search setting of a property when it is passed from command-line: http://robmensching.com/blog/posts/2010/5/2/The-WiX-toolsets-Remember-Property-pattern.

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