WinSCP not installing on saw host machine

Hello,

when I tried to download WINSCP ver 5.1.1.7 which is 11 KB size, it shows as downloaded but does not show in installed softwares.
is this a bug ? please advise and suggest remedy.

regards
Diwaker

Where did you try to download 5.1.1.7 from? There was never such version.
Download the latest version from:
https://winscp.net/eng/download.php