I’m referring to this post, as I see that now on Windows I can no longer see the thumbnails of both step and 3mf files. Does anyone have a solution please, it’s very inconvenient now not to see the previews anymore, thanks everyone and happy printing.
Just saw this link. This certainly will help me wade through my downloads directory to pick out the files I want, without opening them all up! Thank you!
Just ran across this post and wanted to say thanks! This app is the gift that keeps on giving. now I can finally stop opening every file to see what is inside! 
You saved my time, Thanks a lot Buddy..!!!
You are welcome.