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Firefox - Accessibility not Available During Multi-Process Support

Accessibility features are not yet fully supported in multiprocess Firefox. If the third-party software (screen readers, Windows touchscreen software or anti-spyware) requests access to Firefox's accessibility features, Firefox limits this access to web content to prevent stability issues. Restarting Firefox will change it back to single process mode and re-enable accessibility features automatically.

How to re-enable Firefox's accessibility features

  1. To fully enable accessibility features after having received a notification, restart Firefox. It will restart in single process mode.
  2. To force enable electrolysis for testing purposes, go to the about:config settings and set the browser.tabs.remote.force-enable preference to trueRecommended for advanced users only.
  3. Avoid running third-party software that requests accessibility features within Firefox.

If you have any questions, come by the Help Desk at Hardman & Jacobs Undergraduate Learning Center Room 105, call 646-1840, or email us at

Keywords:Accessibility not available during multi-process support firefox internet web browser   Doc ID:82338
Owner:John B.Group:New Mexico State University
Created:2018-05-17 13:15 MDTUpdated:2018-05-23 13:29 MDT
Sites:New Mexico State University
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