Legacy Update Help
Does this bypass Windows activation or let me activate with a non-genuine product key?
No, a product key you legitimately own is still required. Legacy Update does not modify the Windows Product Activation or Windows Genuine Advantage features in any way. Rather, it updates Windows’s SSL security settings to enable connections to modern web servers to succeed. This corrects a connection issue with the Windows XP and Vista activation servers, so you can activate Windows exactly as you would have done in the past.
Bypassing activation mechanisms is not, and never will be, planned. You may also be required to install mandatory Windows Genuine Advantage updates, or pass WGA validation to install certain updates.