Accessibility not available during multi-process support

Firefox Firefox Last updated: 33% of users voted this helpful
No one has helped translate this article yet. If you already know how localizing for SUMO works, start translating now. If you want to learn how to translate articles for SUMO, please start here.

Accessibility features are not yet fully supported in multiprocess Firefox. If 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 Configuration Editor (about:config page) and set the browser.tabs.remote.force-enable preference to true.
    Warning: These instructions are for experienced Firefox users. Changing settings in the Configuration Editor (about:config) can have serious effects on your browser’s stability, security and performance.
    Only proceed if you are comfortable with advanced settings and understand the potential impacts.
  3. Avoid running third-party software that request accessibility features within Firefox.

Was this article helpful?

Please wait...

These fine people helped write this article:

Illustration of hands

Volunteer

Grow and share your expertise with others. Answer questions and improve our knowledge base.

Learn More