Steam - FAQ | GhostKeys

Question 1

Why does Steam say "Invalid Product Code"?

Accepted Answer

This error ("Invalid Product Code — The product code you've entered is not valid") has four main causes: a typo in the code (watch out for I/L/1 and O/0 mix-ups — always copy-paste from email instead of typing), entering the key in the wrong field (game keys go through Games → Activate a Product on

Question 2

Where do I enter a Steam game key?

Accepted Answer

To activate a Steam game key, open the Steam client, click Games in the top menu, then select "Activate a Product on Steam..." and follow the prompts. You can also activate via browser at store.steampowered.com/account/registerkey. Note: Steam Wallet codes (gift cards) are entered separately — go to