Can't Uninstall Kaspersky Online Scanner - How Do I Fully Remove Kaspersky Online Scanner in Windows 8

Can’t uninstall Kaspersky Online Scanner from your computer? You might consider that you have removed it. However, there are some leftover files. And you try to delete them again and again, but you are failed. The related files are still there and the error message pops-up telling you that you need to re-install the software.