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Windows 8 Activation Error : The filename, directory name or volume label syntax is incorrect

When trying to activate my Windows 8 , I received this error screen :

First thing to do was to ask Google for help 😉

And I found that the problem is documented in this Microsoft Support Article.

To resolve the problem, follow these instructions :

  1. Open the  command prompt and run it as an administrator.
  2. Type the following command: slmgr.vbs /ipk  XXXXX-XXXXX-XXXXX-XXXXX-XXXXX ( 5*5 X is your product Key)

3. You should see this pop up window within a few seconds :


Now if you go back to the Control Panel and try to activate

You will receive this message

Now enjoy your Windows 8 🙂