It is clearly mentioned in the “How to Activate 360 Antivirus Pro?” query that the license key you receive on completion of your payment will be valid for one time. If you uninstalled or deleted the program from your current devices for any reason, you won’t be able to activate it using the same activation code. As a result, when you download the security software on your system again and try to activate it, you will see that it is not working any more. It is so because we have deliberately built this mechanism to protect your account, user ID, and Password against theft. Even when the 360 Antivirus Pro is active on your system, no one can run the program on another system using the same activation code. One license key would be valid for one system.
