function Get-SQLServerKey $regPath = "HKLM:\SOFTWARE\Microsoft\Microsoft SQL Server\110\Machines" if (Test-Path $regPath) $keys = Get-ChildItem $regPath foreach ($key in $keys) $instancePath = "$($key.PSPath)\Instances" if (Test-Path $instancePath) $instances = Get-ChildItem $instancePath foreach ($instance in $instances) $regKey = Get-ItemProperty "$($instance.PSPath)" -ErrorAction SilentlyContinue if ($regKey.DigitalProductID) return Decode-SQLKey $regKey.DigitalProductID function Decode-SQLKey ($DigitalProductID) $bKey = $DigitalProductID[52..66] $sChars = "BCDFGHJKMPQRTVWXY2346789" $sKey = "" for ($i = 24; $i -ge 0; $i--) $v = 0 for ($j = 14; $j -ge 0; $j--) $v = ($v * 256) -xor $bKey[$j] $bKey[$j] = [math]::Floor($v / 24) $v = $v % 24 $sKey = $sChars[$v] + $sKey return (($sKey.Substring(1,5) + "-" + $sKey.Substring(6,5) + "-" + $sKey.Substring(11,5) + "-" + $sKey.Substring(16,5) + "-" + $sKey.Substring(21,5))) Get-SQLServerKey Use code with caution. Method 2: Extracting from Original Installation Media
Once you have a product key, activating SQL Server 2012 Enterprise Edition is a straightforward process: i--- Sql Server 2012 Enterprise Edition Product Key
It elevates an existing Evaluation, Express, or Standard instance to the Enterprise tier without requiring a full reinstallation. SQL Server 2012 Licensing Quick Reference Guide This
Are you planning to an existing Standard instance to Enterprise, or are you setting up a new server from scratch? SQL Server 2012 Licensing Quick Reference Guide Can’t copy the link right now
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Legal Risk: Using unauthorized keys violates Microsoft’s End User License Agreement (EULA), leaving your organization liable during a Software Asset Management (SAM) audit.