How to start another Firefox instance on Windows?

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How exactly can I start several Firefox instances, so that I could use several proxies?

I don’t want to use Firefox add-ons, and I need to be logged in several places [via HTTPS in Firefox], but it requires several proxies (for example, I don’t want to install FoxyProxy).

Extra: How do I do it under Linux?


The solution might be to use multiple profiles.

See mozillaZine’s Command line arguments on how to start Firefox with different profiles.
More info can be found in Managing profiles.

For Windows: firefox -no-remote

For Linux: /usr/bin/firefox -no-remote

Make sure that there is no existing instance of Firefox before running this command.

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