Why don't MSI Installers Run in Elevated Context??? (And other deployment related questions)

Discussion in 'Windows Vista Installation' started by Joseph Geretz, Feb 28, 2007.

  1. Here's the situation.

    I have an installer which needs to install and register an ActiveX EXE as
    part of my product.

    (Yeah, it's me again. :-\ I'm getting awfully tired of this myself.)

    In order to do this, the executable needs to be launched with elevated
    permissions.

    Fact 1. The name of my MSI is MyAppSetup.MSI. (It contains the magic term
    'Setup'.)

    Q1. Does the MSI run in elevated context? The indication that it does is
    that I do get the elevation prompt when the MSI is launched. Indications
    that it does not run elevated are a, there is no 'shield' incorporated to
    the icon and b, see Fact 2. So I'm really not sure about this. Does the MSI
    run in elevated context? Can someone answer this question, please?

    Fact 2. Whatever the answer to Q1, the ActiveX executable launched as a
    custom action from within the MSI does NOT get elevated and consequently
    fails with 'Unanticipated error', since it can't get access to the Registry
    which it needs in order to register itself.

    Q2. IF the answer to Q1 is YES, then why doesn't the ActiveX application
    launch as elevated? Can someone answer this question please?

    Fact 3. If I compile my installer to EXE, as opposed to MSI then the
    installer runs elevated (as proof, the icon displays the little shield icon
    in the corner) AND the ActiveX executable properly launches elevated and
    registers itself properly during the installation.

    Q3. If an EXE can do this, why can't an MSI?

    Q4. How is an MSI supposed to be deployed via Active Directory Group Policy?
    Will it be able to run elevated under this condition? Will executables
    launched from the MSI be able to run elevated under this condition?

    Q5. Am I going to need to generate 2 installers for every software release;
    an MSI for Group Policy install and an EXE for interactive workstation
    install?

    Just a few questions. Anyone wishing to install software for Vista is going
    to need to know the answers to these questions.

    Thanks for your help!

    - Joseph Geretz -
     
    Joseph Geretz, Feb 28, 2007
    #1
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  2. Joseph Geretz

    Jesper Guest

    Jesper, Feb 28, 2007
    #2
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