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When I ask to save a file, the save dialog box in Firefox deletes the file extension (e.g., "doc", "pdf", "ofx") from the filename,

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When I ask to save a file, the save dialog box in Firefox deletes the file extension (e.g., "doc", "pdf", "ofx") from the filename, and I must manually add it back. Prior versions did not behave this way.

When I ask to save a file, the save dialog box in Firefox deletes the file extension (e.g., "doc", "pdf", "ofx") from the filename, and I must manually add it back. Prior versions did not behave this way.

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Please try : SAFE MODE

In Firefox Safe mode these changes are effective:

  • all extensions are disabled (about:addons)
  • default theme is used (no persona)
  • userChrome.css and userContent.css are ignored (chrome folder)
  • default toolbar layout is used (file: localstore-safe.rdf)
  • Javascript JIT compilers are disabled (prefs: javascript.options.*jit)
  • hardware acceleration is disabled (Options > Advanced > General)
  • plugins are not affected
  • preferences are not affected

TEST"""""""""""""""""""""""""""""""""is the issue still there ?

If yes : Please Refresh but do this 1st: Delete your Cookies and Cache and TEST.

then

TEST....... If no issues then Extensions which need to be added back in 1 at a time and tested ..... Or it is your Profile : Make a new one and test ...:

If is your Profile :

Note: Any customization will revert back to default, you will also need to reinstall Extensions.

Please let us know if this solved your issue or if need further assistance.

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Some complaining of this issue discovered it was a Windows setting that caused this issue.