1. Update Steam
Steam should automatically update itself but you can force it to update by clicking "Check for Steam Client Updates"
2. Be sure your contact email address is verified with Steam.
You must verify your contact email address with Steam. You can check whether your email address is already verified by visiting Steam Account Settings. A verified address will be marked as "Verified." To verify your email address, follow these instructions.
3. Restart Steam
That's it! With Steam Guard enabled, you will be asked to enter the special access code sent to your email address each time you login to Steam from an unrecognized computer.
Ich frage mich gerade, wie genau man Steam Guard aktivieren kann... Meine Mailadresse ist seit 7 Jahren verifiziert. In den Optionen sehe ich keine Einstellung zum "einschalten" der Guard-Funktion.
Reicht eine verifizierte E-Mail-Adresse aus?
MfG