How do I change the product language on my PC?

This discussion has a more recent version.

The product automatically detects your default system language and sets the product to the same language. During the installation, you can select your preferred language on the F-Secure SAFE setup page (the same page where you accept the End User License Terms).

If you later on want to change the product language, you need to do a fresh installation of the product, and remember to select the language during the setup.