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Editorial Team
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Asked: 2026-05-16T07:00:17+00:00

I have a setup project that I’m working with and have added a EULA

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I have a setup project that I’m working with and have added a EULA to the User Interface. I need to support both unattended (command line) installation as well as GUI install via running setup. The EULA is enforced in the GUI install but not in the unattended one.

Currently I’m running the command line installation in the following format passing in parameters used in a custom action:

MSIEXEC /i ProjectSetup.msi /qn /l* log.txt Param1=”Foo” Param2=Bar

Worst case I suppose I could require an additional parameter “AcceptEULA” and bomb out of the install if it’s not found when we’re doing a command line installation. Any guidance anyone can provide is greatly appreciated.

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  1. Editorial Team

    Everyone should realize that Param1 Param2 and AcceptEULA cann’t be passed to an MSI. Only public properties ( all upper case ) like ACCEPTEULA can be passed.

    MSI can easily do this by using a LaunchCondition that keys off of a custom property such as ACCEPTEULA and the built-in property UILevel. The goal is to only allow installation if UILevel=5 or ACCEPTEULA=1 or if the product is (already) Installed

    Condition:

    UILevel = 5 or ACCEPTEULA or Installed

    You must accept the EULA to install [ProductName].

    Public Properties:
    http://msdn.microsoft.com/en-us/library/aa370912(VS.85).aspx

    Launch Condition:
    http://msdn.microsoft.com/en-us/library/aa369752(VS.85).aspx

    UILevel:
    http://msdn.microsoft.com/en-us/library/aa372096(VS.85).aspx

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