If you already have the product installed on your computer and you only need to activate or reactivate your AVG, Go through the steps. In case, AVG antivirus is already installed on your system, you just need to activate or reactivate your antivirus. Follow the instructions to activate/ reactivate AVG:

Step 1:Double click on the AVG icon on your Desktop or if no there, check for it in the notification section on the taskbar (the bottom-right corner of your computer screen).
Step 2:A new Window will open up with Activate or Reactivate option. Chose an option required according to the need.
Step 3:If the option doesn't appear in the menu section, it is possible that you might open the AVG Zen window. In that case, you need to click the Protection file to get redirected to the main AVG user interface.
Step 4:Enter your License Number that you have received in your registered mail after buying AVG.
Step 5:Proceed by clicking on 'Activation' button.

Avg.com/Retail Wait for a while as the activation process might take several minutes. You can verify the activation process by selecting the Support option in the top menu bar. You can also check for you validity time and other detail about your AVG product.