To get your MSI to prompt for elevation, set the
Package\@InstallScope="perMachine" and remove any Package\@InstallPrivileges
that may be present.
Calling into your BHO to register it is called "self-reg" or "Self
Registration" and it has a very bad reputation due to the very high failure
rates and blocked installations it causes in the wild. I STRONGLY recommend you
NOT self register your BHO and instead translate all of its registration into
WiX directly.
Some people use the Heat tool to assist in transferring that registration into
WiX, but if you have the source code to your BHO you can often do a higher
quality job if you do this manually.
BTW, custom actions that are immediate as well as custom actions that
impersonate will often not have administrative privileges. All of this
information is available in the MSI documentation, the WiX tutorial, the WiX
book, the WiX manual, and repeated hundreds of times in this very mail list.
I would not start a new complex Ruby on Rails project in the first 30 minutes
of being introduced to Ruby, same with C#, same with WiX. Any new nontrivial
development language/environment requires some study before you will have the
knowledge to avoid bugs. Unfortunately in deployment, bugs tend to have
harder-to-mitigate lasting side-effects due to obscure edge cases compared to
just about every other environment we software developers encounter, so this
space demands giving it the same due diligence one would give to learning any
new language/environment, etc.
Blair Murri
> From: d...@vulscan.com
> Date: Tue, 16 Jul 2013 20:53:47 -0700
> To: wix-users@lists.sourceforge.net
> Subject: [WiX-users] Understanding WiX elevation and BHO
>
> Hey guys,
>
> I am still rather new to WiX and I am confused on some behavior relating to
> the generated MSI.
>
> It surrounds the registration of a browser helper object (BHO) for Internet
> Explorer. The current test bed is on Windows 8 Enterprise, but it should
> have the same affect on earlier versions of Windows too. I am using Visual
> Studio 2012 Ultimate with WiX 3.7.
>
> Basically what I am seeing is that as a Standard User:
>
> 1. If I run "msiexec /i myinstaller.msi" from an elevated cmd windows as
> Administrator, all registers properly and the BHO loads the next time IE
> runs.
>
> 2. If I run myinstaller.msi from an elevated cmd windows as Administrator,
> all registers properly and the BHO loads the next time IE runs.
>
> 3. If I double click on the msi it prompts for elevation, installs but
> isn't properly registered in IE.
>
> 4. If I right click on the msi and select "Install" it prompts for
> elevation, installs but isn't properly registered in IE.
>
> Inside the .wxs I have the CustomAction to register the BHO set to
> "/privileges=admin" and "Impersonate="yes"". I am unsure what more I need
> to do.
>
> My desired result is that when someone downloads the MSI I want it to
> prompt for elevation, and do whatever it is that msiexec apparently is
> doing from the elevated cmd prompt. What exactly should I be reading up on
> to get that to work? I know there are some people that have setup.exe
> bootstrappers, but I want to ship just a single MSI or EXE that someone
> runs. I prefer the MSI so I can push it cleanly with Active Directory
> Software Distribution Policies and InTune in the future.
>
> Can someone point me in the right direction?
>
> --
> Regards,
> Dana Epp
> Microsoft Security MVP
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