How to disable multiprocessor support in Mozilla Firefox

To disable multiprocess go to about:config by typing it in your URL bar.

Search for browser.tabs.remote.autostart using the search box on about:config.

There may be multiple results. Set them all to false and restart the browser.

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Ping Sender .exe on Windows Mozilla Firefox

Those who don't want to provide Mozilla with data can turn the data off by following this steps:

1. Load about:config?filter=toolkit.telemetry.shutdownPingSender.enabled in the browser's address bar. This opens the advanced Firefox configuration dialog.
2. The preference toolkit.telemetry.shutdownPingSender.enabled determines whether Pingsender is used or not. You can disable it by setting its value to False. Simply double-click on the preference to do so.
3. The preference toolkit.telemetry.shutdownPingSender.enabledFirstSession enables Pingsender for the first session as well.

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