I have Rufus (Portable) version 3.17.1846. Your application (apparently) does not like this and wants to install version 3.16.1836. Because of this, every time I use "Patch My PC" on any of my 9 machines, I must stop, go down to the bottom of "Patch", and remove the check mark to stop the installation of the older version. :-\
The latest Rufus we have in Patch My PC is v3.17.1846
You must download it from Patch My PC so it marks it as updated and don't show you the update again. (Since it's portable)