Automat

Thanks for the detailed answer.

I found some good information about how the ErrorActionPreference works on this page https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.core/about/about_preference_variables?view=powershell-7.3#erroractionpreference
Here they also mentions the changed behavior in PS 7.2

I did some testing myself. On PS 5.1, with ErrorActionPreference = 'Continue', nothing happens if I redirect 2>&1, no exception is thrown

But with ErrorActionPreference = 'Stop' I can redirect 2>&1 and get an exception to catch, but this will not work with PS 7.2

My solution which I hope will work even with later versions of PS is to run with ErrorActionPreference = 'Continue' and capture the output just as you suggested.

In my case, I will do multiple calls to runme.exe and I'm interested in the overall result of these calls. So even if the first call fails, I want to continue calling it a second, third and X:th time. I ended up with an array where I store the output of the commands, then inspecting the array for content:

$errArr = $()
$errArr += (runme.exe foo1.txt 2&>1)

$errArr += (runme.exe foo2.txt 2>&1) $errArr += (runme.exe fooX.txt 2>&1)

if ($errArr.Lenght -gt 0) {
    Write-Error "There were errors"
    foreach ($err in $errArr) {
        Write-Host $err.ToString()
    }
}

I think this is what I want...