Log into the official DCS World website . Check your "Payments" or "Orders" history.
If you have the DVD version, the key is usually on a sticker on the back of the manual or inside the case. Common Activation Issues on Windows 10/11 flaming cliffs 2 activation key
In short: Eagle Dynamics has moved away from the standalone Lock On series. The content of Flaming Cliffs 2 has been entirely superseded by Flaming Cliffs 3 (FC3) and the newer Flaming Cliffs 2024 , which are modules within the free-to-play DCS World environment. Why upgrade instead? Log into the official DCS World website
You may need to update the StarForce drivers manually from the StarForce website to ensure the activation window even pops up. Common Activation Issues on Windows 10/11 In short:
You get the same planes (F-15C, Su-27, A-10A, etc.) but with 64-bit support and high-fidelity flight models.