(172) Microsoft Intune - Set Default Language to en-AU during Autopilot

This issue has been daunting on for quite some time now, I was thinking this post I mentioned would work: https://soeintunedevice.wixsite.com/home/post/140-microsoft-intune-set-user-locale-using-remediations which was only partial of what it's supposed to do.

Thanks to Peter for his post around: Install an additional language pack on Windows 11 during Autopilot enrollment | Peter Klapwijk - In The Cloud 24-7 which works perfectly during Autopilot.

To wrap it around as a Win32 app, you will need to prep:

Install.ps1 - which can be found here in my Github repo

All you need to do here is update the variables:

$CompanyName = "XYZ"
$LPlanguage = "en-AU"
$inputlocale = "en-AU"
$geoId = "12"  # Australia

If ($ENV:PROCESSOR_ARCHITEW6432 -eq "AMD64") {
    Try {
        &"$ENV:WINDIR\SysNative\WindowsPowershell\v1.0\PowerShell.exe" -File $PSCOMMANDPATH
    }
    Catch {
        Throw "Failed to start $PSCOMMANDPATH"
    }
    Exit
}

# Start logging
Start-Transcript "$($env:ProgramData)\Devicie\Autopilot\Set-Language.log"

#Set variables (change to your needs):
"Set variables"
#Company name
$CompanyName = "XYZ"
"CompanyName = $CompanyName"
# The language we want as new default. Language tag can be found here: https://learn.microsoft.com/en-us/windows-hardware/manufacture/desktop/available-language-packs-for-windows
$LPlanguage = "en-AU"
"LPlanguage = $LPlanguage"
# As In some countries the input locale might differ from the installed language pack language, we use a separate input local variable.
# A list of input locales can be found here: https://learn.microsoft.com/en-us/windows-hardware/manufacture/desktop/default-input-locales-for-windows-language-packs
$inputlocale = "en-AU"
"inputlocale = $inputlocale"
# Geographical ID we want to set. GeoID can be found here: https://learn.microsoft.com/en-us/windows/win32/intl/table-of-geographical-locations?redirectedfrom=MSDN
$geoId = "12"  # Australia
"geoId = $geoId"

#Install language pack and change the language of the OS on different places

#Install an additional language pack including FODs
"Installing languagepack"
Install-Language $LPlanguage -CopyToSettings

#Check status of the installed language pack
"Checking installed languagepack status"
$installedLanguage = (Get-InstalledLanguage).LanguageId

if ($installedLanguage -like $LPlanguage){
	Write-Host "Language $LPlanguage installed"
	}
	else {
	Write-Host "Failure! Language $LPlanguage NOT installed"
    Exit 1
}

#Set System Preferred UI Language
"Set SystemPreferredUILanguage $inputlocale"
Set-SystemPreferredUILanguage $inputlocale

# Configure new language defaults under current user (system) after which it can be copied to system
#Set Win UI Language Override for regional changes
"Set WinUILanguageOverride $inputlocale"
Set-WinUILanguageOverride -Language $inputlocale

# Set Win User Language List, sets the current user language settings
"Set WinUserLanguageList"
$OldList = Get-WinUserLanguageList
$UserLanguageList = New-WinUserLanguageList -Language $inputlocale
$UserLanguageList += $OldList | where { $_.LanguageTag -ne $inputlocale }
$UserLanguageList | select LanguageTag
Set-WinUserLanguageList -LanguageList $UserLanguageList -Force

# Set Culture, sets the user culture for the current user account.
"Set culture $inputlocale"
Set-Culture -CultureInfo $inputlocale

# Set Win Home Location, sets the home location setting for the current user 
"Set WinHomeLocation $geoId"
Set-WinHomeLocation -GeoId $geoId

# Copy User Internaltional Settings from current user to System, including Welcome screen and new user
"Copy UserInternationalSettingsToSystem"
Copy-UserInternationalSettingsToSystem -WelcomeScreen $True -NewUser $True

# Add registry key for Intune detection
"Add registry key for Intune detection to HKLM\Software\$CompanyName\LanguageXPWIN11ESP\"
REG add "HKLM\Software\$CompanyName\LanguageXPWIN11ESP\v1.0" /v "SetLanguage-$inputlocale" /t REG_DWORD /d 1

Exit 3010
Stop-Transcript

Detect.ps1 - which can be found here in my Github repo

Update variables: $Name = "SetLanguage-en-AU"

$Path = "HKLM:\Software\Devicie\LanguageXPWIN11ESP\v1.0"
$Name = "SetLanguage-en-AU"
$Type = "DWORD"
$Value = "1"
 
Try {
    $Registry = Get-ItemProperty -Path $Path -Name $Name -ErrorAction Stop | Select-Object -ExpandProperty $Name
    If ($Registry -eq $Value){
        Write-Output "Detected"
       Exit 0
    } 

    Exit 1
} 

Catch {

    Exit 1
}

Once packaged, and added to the ESP and make sure to extend your time to 90 mins or more.

The end result you will get for each and every user who logs in:

After the user has logged in, highly suggest that the device is rebooted.