text: why i cant scan in "free scan virus in trend micro house"? pls help me. thnx.? i use avg antivirus but i want to scan online in trend micro house call but it says cant scan. why? make sure that you have java installed, http://www.java.com - and that you install the active x control and that your security settings allow it to work.  if you still can't get the scan to work download avg or avast