Windows XP Professional - Unauthorized product key -But It's a valid key.


  • Hi,

    I had to reformat  and reinstall Windows XP Professional to an HP Compaq notebook .
     I got the current windows XP  key using

    After the reinstall was finished windows asks me to activate the product, but it returns the error "Unauthorized product key".

    i used the Windows Update Product key Tool  to verify my product key .it also says its valid.

    But still on activating through that key i am alwayas getting the "Unauthorized product key" message.

    CAN you please help out?

    Thursday, February 11, 2010 12:09 PM


All replies