here is the below script which can retrieve your SharePoint product key from the machine, tested in Dev server (SharePoint 2010 version). i hope this may help in some situations for you:
const HKEY_LOCAL_MACHINE = &H80000002
strKeyPath = "SOFTWARE\Microsoft\Office\14.0\Registration\{90140000-110D-0000-1000-0000000FF1CE}"
strValueName = "DigitalProductId"
strComputer = "."
dim iValues()
Set oReg=GetObject("winmgmts:{impersonationLevel=impersonate}!\\" & _
strComputer & "\root\default:StdRegProv")
oReg.GetBinaryValue HKEY_LOCAL_MACHINE,strKeyPath,strValueName,iValues
Dim arrDPID
arrDPID = Array()
For i = 808 to 822
ReDim Preserve arrDPID( UBound(arrDPID) + 1 )
arrDPID( UBound(arrDPID) ) = iValues(i)
Next
Dim arrChars
arrChars = Array("B","C","D","F","G","H","J","K","M","P","Q","R","T","V","W","X","Y","2","3","4","6","7","8","9")
For i = 24 To 0 Step -1
k = 0
For j = 14 To 0 Step -1
k = k * 256 Xor arrDPID(j)
arrDPID(j) = Int(k / 24)
k = k Mod 24
Next
strProductKey = arrChars(k) & strProductKey
If i Mod 5 = 0 And i <> 0 Then strProductKey = "-" & strProductKey
Next
strFinalKey = strProductKey
Set wshShell=CreateObject("wscript.shell")
strPopupMsg = "Your Microsoft SharePoint 2010 Product Key is:" & vbNewLine & vbNewLine & strFinalKey
strPopupTitle = "Product Key"
wshShell.Popup strPopupMsg,,strPopupTitle,vbCancelOnly+vbinformation
wScript.Echo strPopupMsg
save its as sharepointlicense.vbs and run it from command prompt.
Thanks,
JK
Update after Suggesting Salaudeen with his Power Shell script for 2007 & 2010 version SharePoint Farm as below:
PowerShell Script to Recover SharePoint 2007 Product key:
function Get-SP2007ProductKey {
$map="BCDFGHJKMPQRTVWXY2346789"
$value = (get-itemproperty "HKLM:\SOFTWARE\Microsoft\Office\12.0\Registration\{90120000-110D-0000-1000-0000000FF1CE}").digitalproductid[0x34..0x42]
$ProductKey = ""
for ($i = 24; $i -ge 0; $i--) {
$r = 0
for ($j = 14; $j -ge 0; $j--) {
$r = ($r * 256) -bxor $value[$j]
$value[$j] = [math]::Floor([double]($r/24))
$r = $r % 24
}
$ProductKey = $map[$r] + $ProductKey
if (($i % 5) -eq 0 -and $i -ne 0) {
$ProductKey = "-" + $ProductKey
}
}
$ProductKey
}
#Call the function
Get-SP2007ProductKey
PowerShell Script to Recover SharePoint 2010 Product Key:
function Get-SP2010ProductKey {
$map="BCDFGHJKMPQRTVWXY2346789"
$value = (get-itemproperty "HKLM:\SOFTWARE\Microsoft\Office\14.0\Registration\{90140000-110D-0000-1000-0000000FF1CE}").digitalproductid[0x34..0x42]
$ProductKey = ""
for ($i = 24; $i -ge 0; $i--) {
$r = 0
for ($j = 14; $j -ge 0; $j--) {
$r = ($r * 256) -bxor $value[$j]
$value[$j] = [math]::Floor([double]($r/24))
$r = $r % 24
}
$ProductKey = $map[$r] + $ProductKey
if (($i % 5) -eq 0 -and $i -ne 0) {
$ProductKey = "-" + $ProductKey
}
}
$ProductKey
}
#Call the function
Get-SP2010ProductKey
Update from Senglory as a comment to my blog post: 03/01/14
And here's the code for Sharepoint 2013
function Get-SP2013ProductKey {
$map="BCDFGHJKMPQRTVWXY2346789"
$value = (get-itemproperty "HKLM:\SOFTWARE\Microsoft\Office\15.0\Registration\{90150000-110D-0000-1000-0000000FF1CE}").digitalproductid[0x34..0x42]
$ProductKey = ""
for ($i = 24; $i -ge 0; $i--) {
$r = 0
for ($j = 14; $j -ge 0; $j--) {
$r = ($r * 256) -bxor $value[$j]
$value[$j] = [math]::Floor([double]($r/24))
$r = $r % 24
}
$ProductKey = $map[$r] + $ProductKey
if (($i % 5) -eq 0 -and $i -ne 0) {
$ProductKey = "-" + $ProductKey
}
}
$ProductKey
}
#Call the function
Get-SP2013ProductKey
[And still i haven't tried this as i don't have 2013 version environment, if it works please do reply your confirmation]