If you purchased Fritz 18 digitally, your serial number is located in your ChessBase Shop Account alongside the installation files.

Fritz 18 is available on the Steam platform, where activation is handled automatically upon purchase.

These files often contain malware or keyloggers designed to steal your personal data.

Run the installer. During the process, you may be asked for the serial number immediately, or the program may install as a "Reader" version first. 2. Entering the Serial Number

, your activation key is usually found in one of these locations:

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