I had no trouble downloading and installing this software on my older laptop. License key worked immediately. I already have this latest version on my Win10 Pro as I finally purchased a license for it a few weeks ago. I have been using this for several years and it beat IOBit Uninstaller as Software Organizer traces the installing process. Since this latest version is free, I decided to up grade the version om my laptop. As I said, no trouble at all.