A: Technically, yes, but it's strongly discouraged. The old versions are no longer supported, their online multiplayer servers have been shut down, and they are incompatible with modern Windows updates and drivers. Using Steam's "New Steam Version" is the only reliable way to play the game today.
This is the most critical distinction for players today. In 2013, the original multiplayer servers (run by Quazal/THQ) were shut down, and the game transitioned to . Legacy Edition
In the context of , the distinction between a product key and a retail code primarily concerns how the game is activated and which version you receive —specifically the "Legacy" version versus the "New Steam Version" (NSV). Key Differences
For the best experience in 2026, ensuring you have a digital key to activate on Steam is the most efficient method. Old retail codes can still be used for activation, but they carry a risk of being previously redeemed. A: Technically, yes, but it's strongly discouraged
If possible, use a platform-tied activation (e.g., redeem on Steam) for easier long-term access and support; treat standalone product keys as legacy and verify redemption status before buying used.
This is the physical key printed on the back of your game manual or inside the DVD case. It was originally used to verify ownership during a disc-based installation and to create an old THQ/Relic online account.
What are you seeing if you try to activate it? How many characters/digits long is your code? This is the most critical distinction for players today
If you are trying to get your game up and running right now, tell me:
A: You should have multiple CD keys inside the box (one for the base game, one for Opposing Fronts). Activate each key on Steam individually as described in the guide above. Once done, your "New Steam Version" will have all content.
A: Yes, functionally. A modern Steam key is just a digital version of the product key. It is used in the exact same way, through Steam's "Activate a Product" menu. Key Differences For the best experience in 2026,
This is the code found inside a physical game box, usually printed on a manual or a sticker. Historically, these were used for disc-based installations and to create a "Relic Online" account.
| Issue | Possible Solution | | :--- | :--- | | | Triple-check the code for typos. Look for common mistakes like confusing the number '0' with the letter 'O', or '1' with 'I'. If the key is from a physical copy, ensure you are using the correct code (usually 24 characters). | | Key Was Found, But Content is Still Locked | This is a common point of confusion. The key has likely added the "New Steam Version" to your library. Install and launch that version. Do not look for separate "Opposing Fronts" installers. All content, if unlocked, will be accessible from the main game menu. | | Missing CD Key for an Old Copy | If you have lost your key for the original Company of Heroes game, Relic once provided a Key Retrieval Tool (the link was previously hosted at cohtool.sega.co.uk ). While this specific tool may no longer be active, your best bet is to contact Sega Support directly. If that fails, buying a new digital Steam key may be the only solution. | | Retail Code Field in Installation | If you are installing from original discs, you can ignore the "Retail Code (if applicable)" field. It is not needed for a standard install. | | Key is Region-Locked | Be extremely cautious when buying keys from third-party marketplaces. Some keys are region-locked and can only be activated in specific countries (e.g., Russia-only keys). Always look for a "GLOBAL" key for guaranteed activation anywhere. |