I apologize for the trouble. but I have a little doubt and a search in the forum didn't help me. Sorry.
After I download a file from the net, before opening it I like to check it with the Antivirus software. i don't know how it's called in english but to check it I rightclick on it and choose "check with....." there are two option, to scan it with Avast and with Ewido. Usually I do both but while Ewido opens a screen to let me see how many files were scanned and the result, Avast open a window with the Awil logo, scan the file (usually very fast) but not let me see the results. this window just closes itself. is it normal? If a file is infected will the window stay open and tell me the file is not safe? Thanks!