Go to Tools|Options|Applications. The first 4 entries relate to Adobe. Make sure that the association is for your 9.1 version. If it's not, click the association that is showing. You will get a downward pointing triangle at the right. Click on it and see if 9.1 is listed. If so, select it. Do the same for the other Adobe items.

You might also want to check "Folder Options" in the Windows Control Panel. In the "File Types" tab you will find all of the file extensions and the programs they are associated with. Scroll down to the PDF extension and insure it's associated with an "Adobe Acrobat Document. If not, click on the <change> button and find adobe in the program list.

Just to let you know, Adobe Reader is now up to version 9.4. You can go to Adobe's website to download the latest.

davewdan

Do you have an Adobe Reader plugin (nppdf32.dll) in the plugins folder in the Firefox Program folder?

Did you enable the plugin for Firefox in the settings of the Adobe Reader program?

See also:

• http://kb.mozillazine.org/Adobe_Reader
• View PDF files using Firefox’s built-in viewer

see below

> Go to Tools|Options|Applications. The first 4 entries relate to Adobe.

> You might also want to check "Folder Options" in the Windows Control Panel

I tried the first method and it seems to work, thanks

But if I reset PDF to Acrobat Document it insists on Acrobat 8, so I had to customize it again

I use Foxit Phantom as a PDF writer and reader, but keep a copy of Adobe reader just in case. Every time I update Adobe Firefox becomes incapable of using either Foxit or Adobe to open PDF's.

The Tools/Options/Applications solution suggested above works for this problem too, except selecting Foxit instead of Adobe. Simply changing the Windows 7 file association as "typically" you would doesn't work.

Thank you. I upgraded from Acrobat 9.4 to X and ran into this problem. Your answer solved this problem perfectly. Again, thank you.