Firefox Release

August 27, 2015

Version 40.0.3, first offered to Release channel users on August 27, 2015

We'd also like to extend a special thank you to all of the new Mozillians who contributed to this release of Firefox!


  • Fix a segmentation fault in the GStreamer support (GNU/Linux) (1145230)

  • Fix a startup crash when using DisplayLink (Windows Only) (1195844)

  • Fix a regression with some Japanese fonts used in the <input> field (1194055)

  • On some sites, the selection in a select combox box using the mouse could be broken (1194733)

  • Some search partner codes were missing (1195683)

  • Various security fixes


  • Disable the asynchronous plugin initialization (1198590)

All Firefox downloads