Can't load Powershell module when executing from installer - powershell

Question

I'm having a simple PowerShell script which import a certificate:
$certificate_file_name = "C:\Files\Plugins\certi1.cer"
$root_cert_folder_path = 'Cert:\LocalMachine\Root'
try
{
$certificate_obj = Import-Certificate -FilePath $certificate_file_name -CertStoreLocation $root_cert_folder_path
}
catch
{
$ErrorMessage = $_.Exception.Message
write-output $ErrorMessage
}
When running the script manually - it's working fine.
In addition, I have an installshield project that have 1 action item - executing the above script.
After building the installer and running it I get the error `The 'Import-Certificate' command was found in the module 'PKI', but the module could not be loaded. For more information, run 'Import-Module PKI'.
Why does it happens? How can it be solved?
`

Answer 1

I found a workaround:
Instead of adding my certificate with Powershell, I did it with batch, that made it work both when running manually and when called as part of installation process.
The batch script is super simple:
Certutil -addstore -f "TrustedPublisher" "path\to\cert\file.cer"
Certutil -addstore -f "Root" "path\to\cert\file.cer"
Since Installshield only supports running powershell scripts , I wrapped the batch with powershell that calls it:
cmd.exe /c 'path\to\batch\script\addCertToRootAndPublisher.bat'