wix - Redistributables for deploying C++ exe developed with Visual Studio 2015 on Windows 7

Question

I have developed a 32-bit C++ application using Visual Studio 2015 (on Windows 10). I want to deploy it onto machines running Windows 7 and later.

I put together a WiX installer and included the VC++ redistributable merge module as described here. The merge module I included was C:Program Files (x86)Common FilesMerge ModulesMicrosoft_VC140_CRT_x86.msm.

This installer appears to work fine but on Windows 7 the installed program will not run, complaining about missing api-ms-win-crt-runtime-l1-1-0.dll.

From searching I suspect that there may be extra files in the redistributable package vc_redist.x86.exe from here, but the WiX docs tell me to use an msm rather than an exe.

It's also possible that the merge module failed to install. I didn't see any errors but I haven't re-run it with logs enabled to check that possibility.

Another option may be to use burn but I am not familiar with this tool; I will go that route if it's the correct one but I'd prefer to stick with MSI if possible.

Answer 1

The VC++ runtime redistributables got more complicated in Visual Studio 2015. See the VC team blog post about the universal CRT. Basically, the merge module is insufficient:

There will not be a merge module for the Universal CRT. If you currently use the CRT merge modules and still want to deploy the Visual C++ libraries centrally, we recommend that you move to the above mentioned Windows Update package or to the VCRedist. Alternatively, you may choose to link statically to the Universal CRT and the Visual C++ libraries.