Could be just a false positive response from your anti-virus software, or you could have a copy that is infected, which is why it's smartest to only get mIRC from an official download site, which is accessable from mIRC Official Download Location . If you can't find something in the latest version, you can always ask here, and we can usually tell you where to look, including (if necessary) step-by-step directions on how to locate it, or worst case scenario (although I can't think of anything that qulaifies at the moment) tell you that it no longer exists in mIRC.