How to use Invoke-WebRequest in PowerShell without having to first open Internet Explorer

So, you get this error message:

Invoke-WebRequest : The response content cannot be parsed because the Internet Explorer engine is not available, or Internet Explorer’s first-launch configuration is not complete. Specify the UseBasicParsing parameter and try again.

..and sure, you could use -UseBasicParsing but, depending on your use case, you might then have to write a lot of functionality yourself that’s already handled for you if you avoid basic parsing.

Luckily, the Internet Exporer First Run wizard can be disabled in the registry, and if your script runs as a privileged user, you can do this from PowerShell:

$keyPath = 'Registry::HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Internet Explorer\Main'
if (!(Test-Path $keyPath)) { New-Item $keyPath -Force | Out-Null }
Set-ItemProperty -Path $keyPath -Name "DisableFirstRunCustomize" -Value 1


It’s worth noting that if your computers are in a domain, there’s also an easy to use GPO for this, at Computer Configuration => Policies => Administrative Templates => Windows Components => Internet Explorer, called Prevent running First Run wizard.

More about that over here (local archive).

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