AV showing False Positve

Last night,I had to scrap everything and reload D2/Expansion and the P Server.when I when I clicked on the server to download,my Avast antivirus did the familiar "ding ding ding,threat has been detected".and from then on would only show a blank page if I tried downloading it again.I ended up having to use another computer (with a different AV) to get the file so,just wanted you to know that some antivirus protection software may show your file as a false positive.