The DVD version of Opposing Fronts uses SafeDisc DRM, which Microsoft disabled in 2015 due to security vulnerabilities. Even with a valid product key, the game will not launch.
If you are trying to play the Opposing Fronts campaigns specifically, ensure the key you entered was specifically for Opposing Fronts . If you entered the key for the original CoH , the British campaign will remain locked. The DVD version of Opposing Fronts uses SafeDisc
| Error Message | Meaning | Solution | | :--- | :--- | :--- | | "Invalid Product Key" | You mistyped it. Or the key is for a different game (e.g., original COH). | Double-check 0 vs O, 1 vs I, 5 vs S. Try activating in Steam. | | "Duplicate CD Key" | This key is already registered to another Steam/THQ account. | The seller scammed you. Dispute the charge. No fix. | | "Region Locked" | The key is from a specific region (e.g., Eastern Europe) and cannot be activated in your country. | Use a VPN might work, but violates Steam ToS. Better to get a new key. | | "Game Requires Original COH" | You are using the original 2007 installer, not Steam. | Ignore. Use the Steam activation method instead. | If you entered the key for the original
Released as the first standalone expansion to the legendary World War II RTS, Company of Heroes: Opposing Fronts introduced two of the most unique factions in the series: the British Second Army and the German Panzer Elite. | Double-check 0 vs O, 1 vs I, 5 vs S
If you redeemed it years ago, try to recover your old Steam account instead of creating a new one. Warning Against Unauthorized Key Generators
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