Go to the File menu at the top left of the interface.
A dialog box will appear. If the serial number is not already pre-filled, type it exactly as it appears in your records.
To fully unlock the capabilities of your chess software, you must correctly enter and register its activation key (also known as a serial number). This code, typically consisting of five groups of five characters, validates your software and grants access to critical features like the "Let's Check" online analysis, free program updates, and 24/7 access to the Playchess.com server. How to Get a Fritz 18 Activation Key fritz 18 activation key top
The key is located within your ChessBase Shop account under the "My Downloads" section, alongside your installation files.
Official keys are provided at the time of purchase. Depending on your purchase method, you can find your serial number as follows: Go to the File menu at the top left of the interface
Click OK. The program will connect to the Internet to verify the key and link it to your hardware ID. Top Activation Tips & Troubleshooting
Each Fritz 18 serial number can be used to activate the software on up to three different computers at the same time. To fully unlock the capabilities of your chess
Click on the Activation option and then select Activate .