Re-enable multi-process support disabled by Windows utilities
This article applies to Windows computers only.
Some accessibility tools on Windows might turn off Firefox's multi-process support. Follow these steps to re-enable it:
- Type in about:config in your address bar. (Click the button to pass the warning screen).
- Look for the accessibility.loadedInLastSession preference and change its value to false.
- Clear the accessibility.lastLoadDate preference by right-clicking to bring up the context menu, and selecting .
- Restart Firefox.