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File association in Firefox ESR

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  • 2 have this problem
  • Last reply by cor-el

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I'm using Ubuntu 12.04 and Firefox ESR 10.0.9 installed but the file association is not working. For example, the history window when the download request to open the folder nautilus does not start. Pdf files, jpg and others are not open with their applications.

The 16.0.1 version of Firefox installed by default works perfectly.

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Try to delete the mimeTypes.rdf file in the Firefox Profile Folder to reset all file actions.

Create a new profile as a test to check if your current profile is causing the problems.

See "Creating a profile":

There may be extensions and plugins installed by default in a new profile, so check that in "Tools > Add-ons > Extensions & Plugins" in case there are still problems.

If the new profile works then you can transfer some files from the old profile to that new profile, but be careful not to copy corrupted files.


You can also try to reset Firefox: