It seems that you're using an outdated browser. Some things may not work as they should (or don't work at all).
We suggest you upgrade newer and better browser like: Chrome, Firefox, Internet Explorer or Opera

I tried this on Microsoft Windows XP 32-bit, Microsoft Windows XP 64-bit, and Microsoft Windows 10 64-bit. It didn't work on any of them, but failed in slightly different ways on each. I purchased the original Rainbow Six CD from e-bay and that works fine on Microsoft Windows XP 32-bit. How do I get a refund for my GOG purchase?