I haven't done this with WiX but I have done it with InstallShield. In that case instead of making the unmanaged DLL a keyfile of it's own component I made it a companion file of the managed assembly that was being installed to the GAC.
In that situation MSI and/or .NET (fusion API) figured out the relationship and the two files were published atomically into the GAC as expcted. I don't see the wxs snippet that you say followed so I'm not sure what you are currently doing in WiX. ---------------------------------------- From: "Daniel Wenqing Cai" <danielw...@yahoo.com> Sent: Sunday, January 15, 2012 5:10 PM To: wix-users@lists.sourceforge.net Subject: [WiX-users] GAC .NET assembly along with its dependent .DLL library Hi, I am new to WiX. I have a special situation that I need some help. My problem is, my .NET assembly needs to be deployed to GAC, but the assembly has a dependency on a third-party unmanaged library which is written by Microsoft. I need to deploy the .NET assembly to GAC, at the same time, the unmanaged library should go to the same GAC folder. I have tried many different options with no success. The following is the trimmed down version of my .wxs file. <Directory Id="DummyGACFolder" Name="DummyGACFolder"> <Component Id="MSID40_GAC" Guid="6D399A09-0D8C-4C21-B69B-F4A369D168C5"> <File Id="msid40.dll" Name="msid40.dll" Source="..\..\lib\msid40.dll" KeyPath="no" Vital="yes" CompanionFile="MyHelper_GAC_FILE" /> </Component> <Component Id="MyHelper_GAC" Guid="0A9E1305-4BC1-4E2E-8AF9-92C18E561C60"> <File Id="MyHelper_GAC_FILE" Name="MyHelper.dll" KeyPath="yes" Source="$(var.MyHelper.TargetPath)" Assembly=".net" /> </Component> </Directory> I also tried different combinations of AssemblyApplication and AssemblyManifest, none of them seems to serve this purpose. I have been able to use GACUTIL /i MyHelper.dll command line to deploy them together to GAC without problem. I can see the two files (MyHelper.dll and msid40.dll) in the GAC folder. The above .wxs does deploy MyHelper.dll to GAC, but not the dependent library (msid40.dll). Can someone please point me to the right direction? Thanks, Daniel ---------------------------------------------------------------------------- -- RSA(R) Conference 2012 Mar 27 - Feb 2 Save $400 by Jan. 27 Register now! http://p.sf.net/sfu/rsa-sfdev2dev2 _______________________________________________ WiX-users mailing list WiX-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wix-users ------------------------------------------------------------------------------ RSA(R) Conference 2012 Mar 27 - Feb 2 Save $400 by Jan. 27 Register now! http://p.sf.net/sfu/rsa-sfdev2dev2 _______________________________________________ WiX-users mailing list WiX-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wix-users