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Microsoft wants Edge to automatically open by default every time you turn on your Windows 11 PC
(www.windowscentral.com)
This is a most excellent place for technology news and articles.
There are links that use a specific "edge" link type that you can't assign to other browsers without admin access. So if it's a work computer you're kinda boned
You can definitely change Teams to use the default browser and not edge without admin access.
I’m pretty sure you can do the same with Outlook. Other links such as the start search menu sure you can’t change them.