Sign in to 360 security center.
Select the Licenses tab.
Open the drop-down list in the Devices section.
Click the Delete button in the right of the device name that you want to delete.
Then you will see "Do you want to add the device to your current account" on the top, click "Add" to bind the new device.
Open 360 Total Security on the PC or tablet on which you want to register.
Login with your 360 premium account.
If you are asked "Would you like to add this device?"
If you didn't see the question mentioned above, please click the "Add" button to bind the device.
6. If you purchased the keys for 3 or 5 devices, please bind the other devices in the same way.
Please check if there is a premium logo on your main page, the logo means that your premium is working, all premium features and tools with a crown are available.
If there is no premium logo on the product, then all premium features are not available, please login your 360 premium account and add the device .
You can check the account information in the personal center (including the key / period of validity / renewal information):
Click on the account icon to enter your account.
Select "License" to view your key, period of validity, renewal information
360 Total Security (Windows version)
360 Total Security Essential (Windows version)
Premium is a value-added service working on 360 Total Security. Therefore, you don’t have to download and install another application for Premium. Premium and non-Premium users share the same installer of 360 Total Security.
To use 360 Total Security Premium:
Download and install 360 Total Security.
Click “Upgrade Now” or any other Premium ads to purchase.
After purchase 360 Account in 360 Total Security program will be launched automatically.
If 360 Account does not start automatically or you purchase Premium outside our application, click “Register License Key” in drop-down list and enter the license key sent by email from 360.
Sign up or log into your 360 account. The key will be registered to this account.
If you are asked “Would you like to add this device?”, click OK .
You’ll see a success message.
If you still see ads, or you can’t I use Premium features after purchase, try the following ways to find the possible reason and solve it:
The key contains 25 characters like this:
If you bought Premium from our online store, the license key was sent to in the email address you entered during purchase by “360”. Try the following ways to find this email:
View license key information on web:
In most cases, follow the instruction after purchase, and you will be required to log in or sign up. The key will be automatically registered to the account you choose . If your key was not registered automatically, you can try to do it manually.
Open 360 Total Security and click “Register License Key” in drop-down list.
Enter your 25-character key into the field. Refer to “Where can I find my license key after purchase?” .
Click Register button.
If you see key error message when you enter the key, try the following ways to solve it:
Yes, you can use at most 3 license keys simultaneously under one account."
Open 360 Total Security and log in with your 360 account.
Select License tab.
Click Renew to the right of the license key.
Complete the payment process. The expiration date will be extended automatically.