Xilinx Ise Webpack License [Bonus Inside]

I recently had to spin up an old Spartan-6 project, and I spent two hours digging through archived Xilinx (now AMD) support pages just to confirm what the legal status of ISE WebPACK actually is. Here is the breakdown you actually need. ISE WebPACK is completely free. No license file is required.

The tools are old. The hardware is legacy. But the license ? That can still be a headache. xilinx ise webpack license

Have you successfully run ISE on Windows 11? Let me know your hack in the comments below. I recently had to spin up an old