Ok!
Dann Probiere es mal damit (Funktioniert bei mir mit Windows 7):
Function Get-WindowsProductKey {
<#
.Synopsis
Function to get the Windows Product-Key (license number) from the Local or remote System
.DESCRIPTION
Retrieves the product key and OS information from a local or remote system/s.
Queries of 64bit OS from a 32bit OS may result in inaccurate data being returned for the Product Key.
You must query a 64bit OS from a process running at 64bit.
.PARAMETER Computername
Specifies the target computer for the management operation. Enter a fully qualified domain name,
a NetBIOS name, or an IP address. When the remote computer is in a different domain than the local computer,
the fully qualified domain name is required.
The default is the local computer. To specify the local computer, such as in a list of computer names,
use "localhost", the local computer name, or a dot (.).
This parameter does not rely on Windows PowerShell remoting, which uses WS-Management.
You can use the ComputerName parameter of Get-WmiObject even if your computer is not configured to
run WS-Management remote commands.
.PARAMETER Credential
Specifies a user account that has permission to perform this action.
The default is the current user. Type a user name, such as "User01", "Domain01\User01",
or User@Contoso.com. Or, enter a PSCredential object, such as an object that is returned by
the Get-Credential cmdlet. When you type a user name, you are prompted for a password.
Note:
If you Provide Credentials you cannot query the local system!
.NOTES
Original Author : Microsoft All-In-One Script Framework
Link: http://gallery.technet.microsoft.com/Backup-Windows-product-key-b41468c2
The sample scripts are not supported under any Microsoft standard support
program or service. The sample scripts are provided AS IS without warranty
of any kind. Microsoft further disclaims all implied warranties including,
without limitation, any implied warranties of merchantability or of fitness for
a particular purpose. The entire risk arising out of the use or performance of
the sample scripts and documentation remains with you. In no event shall
Microsoft, its authors, or anyone else involved in the creation, production, or
delivery of the scripts be liable for any damages whatsoever (including,
without limitation, damages for loss of business profits, business interruption,
loss of business information, or other pecuniary loss) arising out of the use
of or inability to use the sample scripts or documentation, even if Microsoft
has been advised of the possibility of such damages
Edited by: Peter Kriegel to use it even with Windows 7 (and other Windows Versions)
.EXAMPLE
Get-WindowsProductKey
Querys the local computer
.EXAMPLE
Get-WindowsProductKey -Computername "Server1","Server3","Server3"
Querys the remote computer systems with the names Server1,Server3 and Server3
#>
[CmdletBinding()]
param(
[Parameter(ValueFromPipeLine=$True,ValueFromPipeLineByPropertyName=$True)]
[Alias("CN","__Server","IPAddress","Server")]
[string[]]$ComputerName = @($Env:ComputerName),
[System.Management.Automation.PSCredential]$Credential
)
Begin{
# declare function to convert binary to serial number
Function ConvertToKey($Key) {
$Keyoffset = 52
$isWin8 = [int]($Key[66]/6) -band 1
$HF7 = 0xF7
$Key[66] = ($Key[66] -band $HF7) -bOr (($isWin8 -band 2) * 4)
$i = 24
[String]$Chars = "BCDFGHJKMPQRTVWXY2346789"
do {
$Cur = 0
$X = 14
Do {
$Cur = $Cur * 256
$Cur = $Key[$X + $Keyoffset] + $Cur
$Key[$X + $Keyoffset] = [math]::Floor([double]($Cur/24))
$Cur = $Cur % 24
$X = $X - 1
} while($X -ge 0)
$i = $i- 1
$KeyOutput = $Chars.SubString($Cur,1) + $KeyOutput
$last = $Cur
} while($i -ge 0)
$Keypart1 = $KeyOutput.SubString(1,$last)
$Keypart2 = $KeyOutput.Substring(1,$KeyOutput.length-1)
if($last -eq 0 ) {
$KeyOutput = "N" + $Keypart2
}
else {
$KeyOutput = $Keypart2.Insert($Keypart2.IndexOf($Keypart1)+$Keypart1.length,"N")
}
$a = $KeyOutput.Substring(0,5)
$b = $KeyOutput.substring(5,5)
$c = $KeyOutput.substring(10,5)
$d = $KeyOutput.substring(15,5)
$e = $KeyOutput.substring(20,5)
$keyproduct = $a + "-" + $b + "-"+ $c + "-"+ $d + "-"+ $e
$keyproduct
}
} # end Begin{} block
Process{
ForEach($Computer in $Computername) {
# create empty Result Object
$Result = New-Object -TypeName PSObject | Select-Object ProductName,ProductID,ProductKey,ProductVersion,Computername
# test if ComputerName is a IPv4 or IPv6 Address
$IP = [System.Net.IPAddress]'192.168.0.1' # dummy target IPAddress Object for the output of [ref]$IP in next line
If ([System.Net.IPAddress]::TryParse($Computer,[ref]$IP)) {
# Convert to String IP to an knowen String (e.g: '127.000.000.001' will be '127.0.0.1' after that!)
$Computer = $IP.ToString()
}
# convert all localhost addresse to real computername
IF($Computer -eq 'localhost' -or $Computer -eq '127.0.0.1' -or $Computer -eq '.' -or $Computer -eq '::1') {
$Computer = $Env:ComputerName
}
$Result.Computername = $Computer
# create WMI Registry Object
$Hklm = 2147483650
$wmi = $Null
If($Credential) {
$wmi = Get-WmiObject -list "StdRegProv" -namespace root\default -computername $Computer -credential $credential
} Else {
$wmi = Get-WmiObject -list "StdRegProv" -namespace root\default -computername $Computer
}
# get 'DigitalProductId' value from registry
[Array]$DigitalIDvalue = ($wmi.GetBinaryValue($hklm,'Software\Microsoft\Windows NT\CurrentVersion','DigitalProductId')).uValue
# if DigitalIDvalue is not null
If($DigitalIDvalue) {
# Get product name and product ID from registry
$Result.ProductName = $wmi.GetStringValue($hklm,'Software\Microsoft\Windows NT\CurrentVersion','ProductName').sValue
$Result.ProductId = $wmi.GetStringValue($hklm,'Software\Microsoft\Windows NT\CurrentVersion','ProductId').sValue
$Result.ProductVersion = $wmi.GetStringValue($hklm,'Software\Microsoft\Windows NT\CurrentVersion','CurrentVersion').sValue + "." + $wmi.GetStringValue($hklm,'Software\Microsoft\Windows NT\CurrentVersion','CurrentBuildNumber').sValue
# Convert binary value to serial number
$Result.ProductKey = ConvertTokey $DigitalIDvalue
# if ProductKey is null
if(-not $Result.ProductKey) {
Write-Warning "Failed to calculate Windows product key from 'HKey_Local_Machine\Software\Microsoft\Windows NT\CurrentVersion\DigitalProductId'."
}
# return result
$Result
}
Else {
Write-Warning "Failed to get Windows product key from Registry 'HKey_Local_Machine\Software\Microsoft\Windows NT\CurrentVersion\DigitalProductId'."
}
$Result = $Null
} # end ForEach($Computer)
} # end Process{} block
End{
} # end End{} block
} # end Function
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