Weird fichier format while saving fichiers

[ForumBot]

On Windows 10, Acer Aspire E 15

Whenever I download a pdf file, in the prompt comes up to ask where Je veux save it, in the type de fichier, I get some gibberish. This is an example.

Cependant, the file does open as a pdf. Une idée on why this is happening and a possible fix?

Merci d'avance!

EDIT

Here is another example - (the save as is different even though I'm saving a pdf both the times)

[ForumBot]

Open `regedit` and naviguez vers `HKCR\.pdf`. Make note of what the `(Default)` entry value is. Par exemple, si vous avez Adobe Reader it might say `AcroExch.Document`.

Now, naviguez vers `HKCR\`, so in my example above I would naviguez vers `HKCR\AcroExch.Document`.

See what the value for the `(default)` key is. This is where your corruption should be. Vous pouvez change it to something more familiar like `Adobe Acrobat Document`. Or use whatever identifier you want to use, depending on what application it is that is opening the PDFs.