A PowerShell helper function that will invoke a script block a number of times until it completes successfully, with a configurable delay between retries.

Invoke-With-Retry.ps1

function Invoke-With-Retry {
  [CmdletBinding()]
  Param(
    [Parameter(Position = 0, Mandatory = $true)]
    [scriptblock]$ScriptBlock,

    [Parameter(Position = 1, Mandatory = $false)]
    [int]$Retries = 5,

    [Parameter(Position = 2, Mandatory = $false)]
    [int]$DelayInMilliseconds = 100
  )

  Begin {
    $count = 0
  }

  Process {
    do {
      $count++
      $output = $null
      try {
        $output = Invoke-Command -Command $ScriptBlock -ErrorVariable err -ErrorAction Stop

        if ($err.Count -gt 0) {
          throw $errors
        }

        if ($LastExitCode -gt 0) {
          throw $output
        }

        return $output
      }
      catch {
        # A ScriptTerminatedException is thrown when a PowerShell script is terminated by an
        # external process or action, such as a user pressing Ctrl+C or a system shutdown.
        if ($_.Exception.GetType().Name -eq "ScriptTerminatedException") {
          return
        }

        Start-Sleep -Milliseconds $DelayInMilliseconds
      }
    } while ($count -lt $Retries)

    Write-Warning "Failed to execute script block successfully. The maximum number of retries ($Retries) exceeded."
    return $output
  }
}