How many computers can I use my Avast license on?.How do I transfer my Avast license to another computer?.Step 4: Navigate to the Device section.Step 3: Visit this page of Avast in a web browser.Step 2: Look for Avast entry, right-click on the entry and then click Uninstall/Change option.Step 1: On your PC where you no longer use Avast product, type Appwiz.Transfer Avast license/subscription from one PC to another