Forcing PowerShell errors output in English on localized systems

Question

I need to run some PowerShell scripts across various operating systems. Most of them are in English version, however, some are localized for example German, French, Spanish,

Answer 1

[Threading.Thread]::CurrentThread.CurrentUICulture only affects to current one-liner, so you can use it for execution of single .ps1 file.

If you want to change messages to English throughout every command in a PowerShell window, you have to change the culture setting cached in PowerShell runtime with reflection like this:

# example: Set-PowerShellUICulture -Name "en-US"

function Set-PowerShellUICulture {
    param([Parameter(Mandatory=$true)]
          [string]$Name)

    process {
        $culture = [System.Globalization.CultureInfo]::CreateSpecificCulture($Name)

        $assembly = [System.Reflection.Assembly]::Load("System.Management.Automation")
        $type = $assembly.GetType("Microsoft.PowerShell.NativeCultureResolver")
        $field = $type.GetField("m_uiCulture", [Reflection.BindingFlags]::NonPublic -bor [Reflection.BindingFlags]::Static)
        $field.SetValue($null, $culture)
    }
}

(from https://gist.github.com/sunnyone/7486486)