Does Firefox add a file extension while saving those files, or does the file save without any extension at all?

Does it help to set Windows to show all file extensions? See: https://www.bleepingcomputer.com/tutorials/how-to-show-file-extensions-in-windows/

That almost did the trick for firefox. But it adds another problem, i do not want my it to show the extions too, like this. (windows 7 and 8 never did that) I've only seen it like that on linux and ubuntu because of the nautilus viewer. I hated that design.

I already unchecked the windows 10 folder box because of that. can any firefox commands in about:config be used to fix this error?

I'm not aware of a way to force Firefox to show file extensions in Save As windows if Windows is set not to show them. Perhaps another forum volunteer has an idea.

I'll be waiting.

still nothing.

Still haven't found help for this. There no one else on google looking for similar problems to mine.

Possibly most people using the default Windows setting just "trust" that the hidden file extension is the correct one?

Although that makes sense, it does sound too reassuring either if i need to beed able to see it beforehand (to check if its a potentially strange file different than what a download link might be saying)

Still havent found anything

still havent found a solution for this. choosing file type is missing.

its fixed found it under File Explorer folder view options