In the previous tip we illustrated that Get-ItemProperty cannot read registry key values when there is a value present with corrupted content:
PS> $key = "Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Group Policy\History\{35378EAC-683F-11D2-A89A-00C04FBBCFA2}\0" PS> Get-ItemProperty -Path $key Get-ItemProperty : Specified cast is not valid. At line:1 char:1 + Get-ItemProperty -Path $key + ~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : NotSpecified: (:) [Get-ItemProperty], InvalidCastException + FullyQualifiedErrorId : System.InvalidCastException,Microsoft.PowerShell.Commands.GetItemPropertyComma nd PS>
As a workaround, you can instead use Get-Item to access the registry key, and then use its .NET members to read all of its values:
$key = "Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Group Policy\History\{35378EAC-683F-11D2-A89A-00C04FBBCFA2}\0" $key = Get-Item -Path $key $hash = @{} foreach ($prop in $key.Property) { $hash.$prop = $key.GetValue($prop) } $hash
The result looks like this:
Name Value
---- -----
Extensions [{35378EAC-683F-11D2-A89A-00C04FBBCFA2}{0F6B957E-509E-11D1-A7CC-0000F87571E3}]
Link Local
Options 0
GPOLink 1
Version 65537
GPOName Guidelines of the local group
lParam 0
DSPath LocalGPO
FileSysPath C:\WINDOWS\System32\GroupPolicy\Machine
DisplayName Guidelines of the local group
