As has been pointed out, it is a fact that the InstallUISequence is not run during a silent install. Therefore your custom action in the UI sequence cannot be running. Beware that you may have a faith-based install instead of one that relies on Windows known behavior.
Also, you can't run an MSI-based install from the execute sequence, that's been mentioned too, so be glad that you didn't think of it because it won't work anyway. Recursive MSI installs don't work. Prepare for error 1618. I'm going to repeat what's been said: 1. Use the merge modules. 2. If you have a bootstrapper and a reason to get the VC++ on the system for the duration of the install, then run the vcredist exe. I'll also add something Bob A mentioned in case it matters. The UI sequence is not elevated unless the entire MSI is launched elevated, so there may be situations where installing the redist from the UI sequence will fail because of insufficient privilege. Phil Wilson -----Original Message----- From: Tobias S [mailto:tobias.s1...@gmail.com] Sent: Thursday, April 28, 2011 9:36 AM To: General discussion for Windows Installer XML toolset. Subject: Re: [WiX-users] VC++ redistributable questions Thanks for your feedback. I used the InstallUI sequence to install the VCRedist.exe and did nothing in InstallExecute sequence. So actually my implementation can lead to an installed product without installed VCRedist when user runs in /qn. When writing >> - Most installs run in UI mode, otherwise also for InstallExecute a >> condition could be integrated. Same scenario must be considered when >> designing an installer with a bootstrapper I thought of <CustomAction Id='NoVCRedist' Error="No VCRedist ... detected" /> <InstallExecuteSequence> <Custom Action='NoVCRedist' After='LaunchConditions'>Not Installed And Not VC2010REDIST_X86</Custom> </InstallExecuteSequence> I didn't think of installing another MSI in InstallExecute sequence. Sorry for the misunderstanding. Right now I also mentioned that properties are not re-evaluated when FindRelatedProducts is called in InstallUISequence and InstallExecuteSequence. So a set property CA must be implemented... 2011/4/28 Bob Arnson <b...@joyofsetup.com>: > On 28-Apr-11 09:52, Tobias S wrote: >> - With this implementation the VCRedist installer runs at a point >> where the user can run the installation unattended (for bootstrapper >> normally waiting until completion necessary - not considering Burn >> here as it is in beta) >> - Most installs run in UI mode, otherwise also for InstallExecute a >> condition could be integrated. Same scenario must be considered when >> designing an installer with a bootstrapper > > Neither of these is the case: Unattended installs skip the UI sequence > so anything done only in the UI sequence is also skipped. And you cannot > run another installer from the execute sequence; that requires a chainer. > >> PS: I know this approach is somehow quick-and-dirty and not MSDN >> compliant ... but it does a good job ... > > There's nothing wrong with quick, but dirty and unsupported are bad news. > > -- > sig://boB > http://joyofsetup.com/ > > > ------------------------------------------------------------------------------ > WhatsUp Gold - Download Free Network Management Software > The most intuitive, comprehensive, and cost-effective network > management toolset available today. 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