I've just installed the finished version of Windows Defender and it seems to be playing havoc with my machine. Even though the installation is finished, each time I open it, instead of getting the Defender screen I get the installation box and it prepares to install it again. This is despite the fact that, initially it said "installation complete".
I think I'm confusing you. After installation, it didn't go to my desktop-only the Installer was there and that's what I was clicking on. I dragged and dropped it from "All Programs" to the desktop and now it opens as it should. Thanks all.
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