Or there may be some conflicting programs. This happens due to malware in your computer, which may be a virus, adware, or browser hijacker. This error occurs when Google Chrome can’t check for the security certificate of the downloaded files from their publisher and Chrome just can’t scan the program or file. Google Chrome is one of the fastest browsers to surf the internet and download stuff online sometimes, you may get an error when you try to download anything from the web that is “Failed- Virus Scan Failed.”