Activate Windows license and product key against Microsoft's server. /atp Confirmation_ID: Activate the product with a user-provided Confirmation_ID. /cdns: Disable DNS publishing by the KMS host. /ckhc: Disable KMS host caching. /ckms: Clear the name of KMS server used to default and port to default. /cpky: Delete the Windows product key frommy laptop currently has windows 8.1 single language so I bought a key for windows 8.1 pro but the key is not going through.What windows do I need for the windows 8.1 pro license? The license activation key for the original OS is coded into the BIOS, unless you deleted the Factory keys in the BIOS. Once you install Windows 8 and go online it should activate on its own. Upgrading to Windows 8.1 can be done via the Windows store. See the following Microsoft document. Download, extract, and run the program (it will show your own key by default) Press F9 to bring up the Select Source dialog. Select Load the product keys from external Software Registry hive. Browse to the SOFTWARE registry hive. For example, if you have the drive from the other system mounted as drive Z:, then you would probably select Z September 2016. The embedded Windows 8 product key is an Acer OEM one. It will work if you have the recovery media. If you install a different copy of Windows 8, it should automatically ask for the product key, and you will need the product key that the different copy comes with.
Let's see how to activate Windows 8 and Windows 8.1 with a product key. Method 1. Use an automated script. Click here to be redirected to the script you'll use to activate Windows. Select the script, right-click anywhere, and choose Copy from the context menu. Alternatively, use the Ctrl + C keyboard shortcut.
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