Proxy Authentication With Powershell

We all know how annoying it is working somewhere with a proxy server that requires authentication, especially as Microsoft increasingly don’t support the scenario with many of their Azure-related tools. However, it is quite possible to use authenticated proxies with .NET applications including Powershell.

For the former, edit the application .config file and add

<system.net>
<defaultProxy useDefaultCredentials="true" />
</system.net>

And for Powershell, add the following to your scripts or $profile

$proxyString = "http://proxy:8080"
$proxyUri = new-object System.Uri($proxyString)

[System.Net.WebRequest]::DefaultWebProxy = new-object System.Net.WebProxy ($proxyUri, $true)
[System.Net.WebRequest]::DefaultWebProxy.Credentials = [System.Net.CredentialCache]::DefaultCredentials