If you are downloading large files, BITS is superior because it can resume downloads after network disruptions and throttles bandwidth usage to protect network performance. powershell
# Note: Because this is Async, the script continues running immediately. # If you want the script to wait until the download is done, you can add a loop: while ($webClient.IsBusy) Start-Sleep -Milliseconds 100
In highly restricted or secure environments where .NET object creation ( New-Object System.Net.WebClient ) is blocked by execution policies or security software, you can leverage the Internet Explorer COM object. This leverages the browser architecture to handle the download. powershell
$webClient = New-Object System.Net.WebClient $webClient.Credentials = New-Object System.Net.NetworkCredential("username", "password") $webClient.DownloadFile("http://example.com", "C:\Docs\protected.pdf") Use code with caution. Method 2: Using the BITS Transfer Module powershell 2.0 download file
$webClient = New-Object System.Net.WebClient $webClient.Headers.Add("user-agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64)") $webClient.DownloadFile($url, $output) Use code with caution. 2. Exception calling "DownloadFile" with "2" argument(s) This generally points to one of three issues: The URL is typed incorrectly or has expired.
Method 3: Using BITS (Background Intelligent Transfer Service)
Native progress bar and handles network interruptions gracefully. If you are downloading large files, BITS is
This works, but it is brittle . If you run this in PowerShell 2.0 against a modern HTTPS server (which requires TLS 1.2), it will fail spectacularly. Let's fix that.
$url = "http://example.com/file.txt" $outputPath = "C:\Downloads\file.txt"
[System.Net.ServicePointManager]::SecurityProtocol = 3072 # TLS 1.2 This leverages the browser architecture to handle the
Invoke-WebRequest -Uri $url -OutFile $outputPath
– Add try/catch because DownloadFile throws on HTTP errors (404, 500).
The server’s hard drive chirped. A progress bar didn't appear—PowerShell 2.0 was stoic and silent—but the activity light on the disk front flickered rapidly. After a tense minute, the prompt returned to its familiar Alex checked the folder. There it was:
$stream.CopyTo($fileStream) $fileStream.Close()