I see, you must edit the deftask.xml and not the avast4.ini file. You do not have to edit the ini file to scan archives. You have to edit the deftask.xml if you have only the Home version (not Professional) and want that all the archives files were scanned on-access. To scan ‘all’ files on-access you must write an * into the text box for extensions (if I’m not wrong). This will consume a lot of resources of your system.