Hi Lynn761,

Hopefully this explantion will help you. Deleting Firerfox profiles would not normally be a recommended solution if your problem is what I think it is.

I note you have posted in

• My PDF files are now identified as Firefox HTML documents, how to fix it?(only icons changed, extension is still .pdf) /questions/1012676

I have added some additional information to that thread.

The latest release Firefox 31 (for Windows) has changed so that it may open some video and also .pdf files if it thinks nothing else can.

If you right click the files you will get the option to open them with another application instead of Firefox. You can change the choice (see links under).

Firefox 31 is not converting or renaming your files. All it is doing is registering with the Windows OS as an application that is able to open the files and Windows then changes the file's icons accordingly.

This should only occur if no other application has already registered your .pdf files.

Some of the following links may be useful

• Firefox 31 release notes (Mentions the change)
  ^{This was bug 452254 - Register for audio/video .ogg and .pdf file handlers if nothing else has}
• How to change or select which program starts when you double-click a file in Windows XP http://support.microsoft.com/kb/307859 (Also explains how to display file extensions)
• http://windows.microsoft.com/en-gb/windows/change-default-programs (Win 7 or Vista)
• http://pcsupport.about.com/od/fixtheproblem/ht/default-program-windows-7.htm a tutorial with further links including for other Windows versions

You should only have to do this once via the "Open with" dialog and tick the box to remember this choice of always using the Adobe Reader to handle PDF files.

This happened to me as well. You need to reassign Adobe Acrobat or Adobe Reader as the default PDF handler...

Open up Adobe Reader (not Acrobat, if you have it on your system); go to "Edit", "Preferences", "General"; at the bottom of the General settings screen to the right "Select Default PDF Handler"; pull down and choose the PDF handler (e.g., Adobe Acrobat or Adobe Reader).

The other options described above and in other threads did not fix the problem for me.

I've followed the above instructions & have successfully reclaimed my pdf icons & files that open with adobe reader, relieved. I had also seen a pop-up box from a banking site telling me to look in firefox, options, applications, select adobe reader as default in there as well, that was not wholly successful at first. Thanks