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:

  1. Type in about:config in your address bar. (Click the I'll be careful, I promise!I accept the risk! button to pass the warning screen).
  2. Look for the accessibility.loadedInLastSession preference and change its value to false.
  3. Clear the accessibility.lastLoadDate preference by right-clicking to bring up the context menu, and selecting Reset.
  4. Restart Firefox.

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