: If you switch computers, you must go to File > Activation > Deactivate first to "return" the activation to the server. 3. Updates

Activation binds your software to your hardware and enables online features like the "Let’s Check" server.

: Enter the 4-digit captcha displayed in the green box.

The easiest way to install current versions is through the .

: Get the installer from the Official ChessBase Download Page .

: A single serial number typically allows for 3 concurrent activations (e.g., a desktop and two laptops).