You may also go directly to the Xilinx Product Licensing Site to obtain licenses for free or evaluation products if you decided to skip this step during product installation.
Visit the Xilinx Product Licensing Site to generate a License Key.
Visit the Xilinx Product Licensing Site to generate a License Key.
If your legacy IP Core product is not in warranty, or if you need to obtain a license key for IP versions shipped prior to ISE v6.3 or EDK v6.3, Contact Xilinx Software Customer Service
Visit the Xilinx Product Licensing Site to redeem a product voucher.