Firefox – How to open pdf in Firefox with Foxit pdf Reader plugin

After trying various suggested methods, here is the only thing that actually worked:

1. Control Panel
2. Add/Remove Programs
3. Locate Adobe Reader, click Change/Remove
4. Select Repair

Magic, it worked. The PDFs in IE invoke the Adobe Reader plugin.

You may have to do it manually. From the Mozilla KB:

Manually uninstalling a plugin

If you can't use an uninstaller program to remove a plugin, you can remove it manually:

1. In the Location bar, type about:config and press Enter.
2. Search for the preference: plugin.expose_full_path.
3. Double-click on the plugin.expose_full_path preference in the list to change the value to true.
4. Enter about:plugins into the Location bar to display the About Plugins page.
5. Each entry in the About Plugins page will have "File name:" followed by a path. Use Windows Explorer to navigate to the folder shown for the plugin you want to remove.
6. Rename the file to something other than its normal name - e.g. npswf32 becomes Xnpswf32.

The plugin will be removed.