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Was using Chrome as my main browser and FF as my second browser last week. Uninstalled Chrome, made Firefox my main browser and Waterfox as my second browser. Forget Chrome and forget Edge!
Why would you need a second browser?
It's helpful when something doesn't work in your browser and want to test in a different one. I use FF as my main browser and Chromium as my backup.
Yeah that's what I would've assumed too, if they didn't say they use Firefox as main and waterfox as secondary,since they're essentially the same browser
Because I'm an admin of multiple Azure tenants so I have the main one logged in on Firefox and the other one on Waterfox.
You can do that all in Firefox with account containers
https://addons.mozilla.org/en-CA/firefox/addon/multi-account-containers/