This is driving me fucking insane, and after hours of searching, I have found exactly zero threads talking about this problem.
Basically no matter what I do, all links in any program open in Microsoft Edge. Even though Opera is listed as my default browser EVERYWHERE, any program where I click a link (such as a Twitter client, for instance) will load it in Edge. Every time. Opera is set to default in 2 or 3 different menus, and of course within itself, where it acknowledges itself as the default, but Edge is always what loads any links from outside of Opera. I've done everything I can think to do, including reinstalling Opera.
I'm about to pull my fucking hair out. Not because it's even the end of the world, I guess, but just because I'm really angry with how much I've had to do to get Windows 10 into a non-toxic state. Windows 7 was a lot easier to deal with. This shit is making me seriously regret making the decision to upgrade.
Does anybody here have even the least idea what I might be able to do? My only remaining clue is that if you go to Default Programs > Set Default Programs and click on Edge, two things remain checked under "protocols" that cannot be unchecked: URL:microsoft-edge and URL:read. My assumption is that these are the system-level culprits keeping things from opening in Opera, but I've only found one thread that even mentions those values, and nothing that talks about a way to change them.
I want to just get rid of Edge completely, but am afraid that it will break something. It can't be uninstalled, but there are various workarounds ... it just seems that Windows 10 relies on it for some stuff and it would be potentially bad to remove it.