What can I do because of 'Duplicate Product Code' on Steam?
I've just created a new steam account and wanted to activate Half-Live there. Then I got this error message:

When I click on 'Retrieve Account', nothing happens. I am quite sure that I have already activated this many years ago on another account, but I don't remember which account (and which email-address) I used.
When I click on 'See the Steam support site for more information' it seems not to contain helpful information.
I have the original CD and even the receipt.
What can I do now?
Best Answer
Fortunately, because you have the receipt for the game you should be able to basically follow this process with Valve/Steam Support but from a stand point of "I once had this account but don't remember what it was and can prove this game is mine" instead of "I've no longer got this email address". The rest of the process should be the same.
In the instance that you have no proof of purchase for that game, and nothing else linking you to the account, there would be nothing you could do to redeem the game/product a second time.
Pictures about "What can I do because of 'Duplicate Product Code' on Steam?"



Can you use Steam activation code twice?
Each Steam key can only be activated in a single Steam account. You can however login using the same Steam account on more than one computer, but only one at a time. When logged into Steam all the games activated within that Steam account can be downloaded, installed and played on the PC.What happens if you activate a product on Steam you already own?
If you enter a steam key of a different copy of the same game you already own, your steam key won't be used. It will say that you already own the game. The exception is when the game is included with others game in a bundle, in this case the key would be lost.How do you remove a product code from Steam?
Choose the game from your Steam Library. Select the cogwheel icon on the right. Choose Manage and then CD Keys. Depending on the game, the CD key option may not appear unless the game is already installed or is being installed.How do I get Steam Unredeem code?
Once activated a key is forever bound to that account. There is NO WAY to un-redeem a key. Period.peaky blinders because we fucking can
Sources: Stack Exchange - This article follows the attribution requirements of Stack Exchange and is licensed under CC BY-SA 3.0.
Images: Karolina Grabowska, SHVETS production, Max Vakhtbovych, Arun Thomas
