Windows Installer XML(WIX) Help: Not able to execute shell command through exeCommand - wix

Question

Following is my code. I need to install the .inf and .cer files after execution of the MSI file. I have tried referring to various wix resources but couldn't find anything. I am testing the installer on a virtual machine but it doesn't seem to work. I am new to wix and need help regarding this by going through the code and pointing out my mistakes.
<?xml version="1.0" encoding="UTF-8"?>
<Wix xmlns="http://schemas.microsoft.com/wix/2006/wi">
<Product Id="*" Name="Cal" Language="1033" Version="1.0.0.0" Manufacturer="Cal" UpgradeCode="my-code">
<Package InstallerVersion="200" Compressed="yes" InstallScope="perMachine" />
<MajorUpgrade DowngradeErrorMessage="A newer version of [ProductName] is already installed." />
<MediaTemplate EmbedCab="yes" />
<Feature Id="ProductFeature" Title="Cal" Level="1">
<ComponentGroupRef Id="ProductComponents" />
</Feature>
<!--<CustomActionRef Id="InstallAction1" />-->
</Product>
<Fragment>
<Directory Id="TARGETDIR" Name="SourceDir">
<Directory Id="ProgramFilesFolder">
<Directory Id="INSTALLFOLDER" Name="Cal" />
<Directory Id="SilInst" Name="BackInst">
</Directory>
</Directory>
</Directory>
</Fragment>
<Fragment>
<ComponentGroup Id="ProductComponents" Directory="INSTALLFOLDER">
<Component Id="P2">
<File Source="C1.sys" />
</Component>
<Component Id="P6">
<File Source="C1.inf" />
</Component>
<Component Id="P7">
<File Source="C1.cer" />
</Component>
</ComponentGroup>
</Fragment>
<Fragment>
<CustomAction Id='InstallAction1' Directory='INSTALLFOLDER' ExeCommand='RUNDLL32.EXE SETUPAPI.DLL,InstallHinfSection DefaultInstall 132 C1.inf' Execute='deferred'
Return='check'/>
<CustomAction Id='InstallAction2' Directory='INSTALLFOLDER' ExeCommand='certutil -addstore C1.cer -s -r localMachine trustedpublisher' Execute='deferred'
Return='check'/>
<InstallExecuteSequence>
<Custom Action="InstallAction2" After='InstallFiles'/>
<Custom Action="InstallAction1" After='InstallAction2'/>
</InstallExecuteSequence>
</Fragment>
</Wix>

Answer 1

To troubleshoot, create an installation log, then search for the custom action id.
Installing driver and certificate on machine typically requires elevated permissions. Therefore use Impersonate="no" for your custom actions. See How to run a Custom Action inside an MSI created in WiX with elevated privileges?