I know this post is almost 4 years old, but I was having this same exact
problem and this seemed to be the only post I could find describing the
problem.
I have a project where all the assemblies are delay signed at build time,
and then re-signed with the private key before being packaged into the .msi
via a pre-build event. Using WiX 3.7 and Visual Studio 2010, when building a
managed Custom Action project, the CustomActions.CA.dll that gets built
contains the delay signed assemblies and NOT the fully signed assemblies,
which causes the error above.
I ended up solving this by using the DTF tool MakeSfxCA.exe to rebuild the
CustomActions.CA.dll as part of my pre-build event, after having fully
signed all assemblies. This tool can be found as part of the WiX DTF
toolset.
> // ... Fully sign all managed assemblies ...
>
> "$(WiX)SDK\MakeSfxCA.exe" "%CA_OUTDIR%\SampleCustomAction.CA.dll"
> "$(WiX)SDK\x86\SfxCA.dll" "%CA_OUTDIR%\SampleCustomAction.dll"
> "%CA_PROJDIR%\CustomAction.config"
> "$(WiX)SDK\Microsoft.Deployment.WindowsInstaller.dll" %CA_DEPENDENCIES%
Where
> CA_PROJDIR: Absolute path to your managed custom action project directory
> CA_OUTDIR: Absolute path to your managed custom action project's output
> directory
> CA_DEPENDENCIES: List of depenencies for your managed custom action
> project
I generated the list of dependencies using windows batch commands, although
I know this could probably be handled better using MSBuild directly. This is
what I used:
> setlocal enabledelayedexpansion enableextensions
>
> set CA_DEPENDENCIES=
>
> for /f %%x in ('dir /b "%CA_OUTDIR%\*.dll ^| findstr /vi
> "SampleCustomAction."') do set CA_DEPENDENCIES=!CA_DEPENDENCIES!
> "%CA_OUTDIR%\%%x"
This will set the variable CA_DEPENDENCIES to a string that is formatted as
such:
> "C:\....\Dependency1.dll" "C:\....\Dependency2.dll"
> "C:\....\Dependency3.dll"
--
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http://windows-installer-xml-wix-toolset.687559.n2.nabble.com/strong-name-sign-for-C-customaction-dll-tp3485726p7584800.html
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