To download avast! products, click here.

Avast! Internet Security / Avast! Pro antivirus

• Right Click the avast! Antivirus icon in bottom right of your desktop.
  
  
  
  
• Click the "Insert license file" button. ( MAINTENANCE > Subscription )
  
  
  
  
• Choose the license file you received.
• After choosing the file, click the "Open" button.

Avast! 4.8 Professional Edition

• Place your cursor at the begining of the license key.
• Click and hold the left mouse button, while pulling your mouse over the license key. This should highlight the key.
• Right Click the highlighted key.
• Select the copy menu item.
  
  
  
  
• Right Click the avast! On-Access Scanner icon in bottom right of your desktop.
  
  
  
  
• Select the "About avast!..." menu item.
  
  
  
  
• The "About avast!..." dialog opens.
• Click the "License Key..." button.
• Right Click the "Enter your license key" text box.
• Select the "Paste" menu item.
• Click the "Ok" button.

Video Tutorial