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I'm getting the same error when trying to download Lenovo drivers, and with the Lenovo Automation Tool, on Windows 2016, MDT 6.3.8450, ADK 10.1.16299. Error seen from Lenovo tool: You cannot call a method on a null-valued expression. At E:\Source\Lenovo\LenovoAutoDownload.ps1:1927 char:5 + ... $farthestEXE = $tags.text.lastIndexOf(".exe`"", $currentI ... + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : InvalidOperation: (:) [], RuntimeException + FullyQualifiedErrorId : InvokeMethodOnNull You cannot call a method on a null-valued expression. At E:\Source\Lenovo\LenovoAutoDownload.ps1:1933 char:6 + ... $farthestURL = ($tags.text.lastIndexOf("`"URL`"", $farthe ... + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : InvalidOperation: (:) [], RuntimeException + FullyQualifiedErrorId : InvokeMethodOnNull You cannot call a method on a null-valued expression. At E:\Source\Lenovo\LenovoAutoDownload.ps1:1935 char:6 + ... $anchors += ($tags.text.Substring($farthestURL + 7, $fart ... + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : InvalidOperation: (:) [], RuntimeException + FullyQualifiedErrorId : InvokeMethodOnNull