To open the Avast user interface, you can follow these steps:
Look for the orange Avast icon in your system tray (it’s usually located in the lower-right corner of the screen). If you don’t see the icon, you may need to click on the up arrow to show hidden icons.
Right-click on the Avast icon and select “Open Avast user interface” from the context menu. Alternatively, you can double-click on the icon to open the user interface.
Once the Avast user interface is open, you can navigate to different sections of the program to perform tasks such as scanning for viruses, managing your firewall settings, and updating your software.