Diablo 2 like most games of his time, and uses 20 - Steam cd keys as a means of copy protection. Key is required to install the game, and you will usually find on the back of the CD jewel case or the game manual. If you have lost your Diablo 2 discs and bought another copy, you will need to change your CD- key. The only way to change your CD - Key in Diablo 2 is to uninstall and reinstall the game.
1. Cancel Diablo 2. Click on the "Start" button and select “Control Panel." Select “Uninstall a program.” Click Diablo 2 and select “Cancel." Follow the prompts provided.
2. Insert your Diablo 2 CD-ROM in your computer. Select “Install “from the menu that will appear automatically launch on your desktop.
3. Select “Yes “to agree to the license agreement.
4. Enter the new 20 CD- key numbers in the boxes provided. Click on the "OK" button. Follow the prompts to complete the installation.
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