Checking your Diablo 2 CD key is essential for installing and playing the game. The CD key is a unique identifier that is used to verify that you have a legitimate copy of the game. Without a valid CD key, you will not be able to play Diablo 2.
There are a few different ways to check your Diablo 2 CD key. One way is to look for the CD key on the back of the game case. The CD key will be printed on a sticker that is affixed to the back of the case. Another way to check your CD key is to look for it in the game’s installation directory. The CD key will be stored in a file called “cdkey.txt” in the game’s installation directory.