check field: Multiprocess Windows if it is set to to: 1/1 (Enabled by user) then restart Firefox and check if Multiprocess is now enabled/forced via: about:support. to: FalseĪbout :config -> -> change Value from (default): False. Mozilla Firefox ESR (Extended Support Release) for Windows XP, Windows Vista, MacOS, Linux:įorce Multiprocess Windows function aka e10s aka Electrolysis, Firefow will turn off e10s by default if some used Add-Ons are not compatible with e10s:Ībout :config -> extensions.e10sBlocksEnabling -> change Value from (default): True. Mozilla Firefox Nightly : download latest release notes Nightly Blog Mozilla Firefox Developer Edition: download latest release notes learn more Mozilla Firefox Beta : download latest release notes Mozilla Firefox Beta / Developer Edition / Nightly:

Users running certain screen readers may experience performance issues and are advised to use Firefox ESR until performance issues are resolved in an upcoming future release.Learn how to mitigate this issue until it is corrected in an upcoming release.

Users running Firefox for Windows over a Remote Desktop Connection (RDP) may find that audio playback is disabled due to increased security restrictions.

When using certain non-default security policies on Windows (for example with Windows Defender Exploit Protection or Webroot security products), Firefox 58.0 would fail to load pages ( bug 1433065).Version 58.0.1, first offered to Release channel users on January 29, 2018

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