Firefox saves the file without extension

Question

When I download a file, Firefox removes the file extension. I mean, if I download "something.pdf", it saves the file as "something". I didn't have this problem before yesterday.

Any help would be appreciated...

Edit: But I can open them by right click and open with. Only problem is the file name. I barely used my home pc in last two days and I'm really curious about what happened. I tried to reset everything revelant to downloading and file extensions in "about:config". But no difference...

Solution

Save all your bookmarks, passwords, etc.

Then, try the following:

Comments

[Dong Hae JANG]

Did you check that the folder you're saving the file into is not configured to hide file extensions?

[Arash]

your files extensions removed or just not shown??

[Karan]

@JustinPearce: Good question, although that option is not folder-specific.

[Chris Nava]

if you double click the file and it opens correctly, then "Hide Extensions" is enabled.

[s.alem]

Of course they're removed. And when I rename them and add the file extension, they open correctly...

[Ƭᴇcʜιᴇ007]

@s.alem Perhaps edit and add that info the question (the fact that you can't open them until you rename and add the extension).

[Ƭᴇcʜιᴇ007]

Also, did you try a Windows System Restore back to a point before "yesterday", when it worked? What have you tried already?

[s.alem]

But I can open them by right click and open with. Only problem is the file name. I barely used my home pc in last two days and I'm really curious about what happened...

[s.alem]

It's not about the website, because i've already tried differents websites. I can't replicate the problem, because I have no idea what's wrong...

[s.alem]

The most radical solution and worked. Thanks a lot. But I wish I could know why that happened...