Firefox does not add the file on the file extension registration

When I ask to save a file, the Save dialog for Firefox removes the file extension (for example, 'doc', 'pdf', "ofx") of file name, and I have to manually add it back. Earlier versions don't behave this way.

You can try to delete the mimeTypes.rdf file in the Firefox profile folder.

  • Help > troubleshooting information > profile directory: opens showing the file

Tags: Firefox

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