Script to upgrade PowerShell Universal. Script assumes a service account is used.

Upgrade-PowerShellUniversal.ps1

Write-Host ("Starting PowerShell Universal upgrade...")

$PSUSettingsPath = (Join-Path -Path $env:ProgramData -ChildPath '\PowerShellUniversal\appsettings.json')
if (-not (Test-Path $PSUSettingsPath)) {
    $PSUSettingsPath = Read-Host ('Unable to find appsettings at {0}. Enter path to appsettings.json' -f $PSUSettingsPath)    
}

$PSUSettings = Get-Content $PSUSettingsPath -Raw | ConvertFrom-Json -Depth 10

$cred = get-credential -Message 'Enter credential for PowerShell Universal Service Account'
$msi = Get-Item .\PowerShellUniversal*.msi | Sort-Object -Property LastWriteTime -Descending | Select-Object -First 1
$ver = ($msi.BaseName).split('.',2)[1]

$PSDefaultParameterValues = @{
    'Write-Host:ForegroundColor' = 'Yellow'
    'Write-Host:BackgroundColor' = 'Black'
}


Write-Host ("Found PowerShell Universal installer version {0}: {1}" -f $ver, $msi.FullName)
Write-Host "Stopping PowerShell Universal service..."

try {
    Get-Service PowerShellUniversal | Stop-Service -Force -Verbose -ErrorAction Stop
}
catch {
    Write-Error ("Unable to stop PowerShell Universal service. Error: {0}" -f $PSItem.Exception.Message)
}

Write-Host ('Creating backup of UniversalAutomation repository ({0})' -f $PSUSettings.Data.RepositoryPath)

try {
    Compress-Archive -Path $PSUSettings.Data.RepositoryPath -DestinationPath ".\PsuBackup-$(Get-Date -Format 'yyyy-MM-dd').zip" -Force -ErrorAction Stop
}
catch {
    Write-Error ("Unable to create backup. Aborting upgrade. Error: {0}" -f $PSItem.Exception.Message)
}

$RepoFolder = $PSUSettings.Data.RepositoryPath
$ConnectionString = $PSUSettings.Data.ConnectionString
$ServiceAccount = $($cred.username)
$ServiceAccountPW = $($cred.getnetworkcredential().password)
$InstallLog = "{0}-install.log" -f $msi.FullName

Write-Host "Executing msiexec..."
msiexec /i ("{0}" -f $msi.FullName) /q /norestart /l*v $InstallLog REPOFOLDER="$RepoFolder" CONNECTIONSTRING="$ConnectionString" SERVICEACCOUNT="$ServiceAccount" SERVICEACCOUNTPASSWORD="$ServiceAccountPW"

Start-Sleep -Seconds 4
Write-Host "Opening log file for monitoring.."

Get-Content -Path $InstallLog -Tail 20 -Wait