HTML file opens with WORD when trying to convert it to PDF with PDFCreator.exe (v 4.3.0.6)

Hi,

I am trying to convert a html file to PDF with the final aim to run it from a command line (and eventually to fully automate the process). How would I get rid of this behaviour ? This only happens on one machine (win7pro), but not on the other (win10pro) ?!

When I doubleclick onto the html file, it opens in IE...

Any ideas ?

Thanks in advance !
Con