The biggest issue for a lot of people is going to be Microsoft forcing all Office 365 users to use Edge all the time. Our sysadmin recently forced me to uninstall Firefox and Chrome from all workstations unless they had an approved use for it. Everything must be through Edge.
Why? "Security" of course. It's always "security". Curious
Edit: the point is Microsoft could have worked to provide enterprise customers with ways to manage third party browsers going forward. They could have worked with Google and Mozilla to make that happen. They didn't. Not really.
It's that Microsoft continues to make decisions that create rationale for only using them, because that's their business. "Security" gives them an extremely convenient cover for anticompetitive behavior. Anyone that thinks their C-Suite hasn't pulled the defender/365 team into a meeting or two to discuss business strategy has far too much faith in a corporation that deserves very little.
Back when Internet Explorer was still a thing you could configure it with group policies domain wide. If Microsoft implemented similar features for Edge in an active directory environment I can definitely see the appeal. Not to say similar isn't possible with Chrome or Firefox, but first party integrations in a corporate environment tends to be the path of least resistance.
Firefox does support GPO amongst other policy mgmt solutions, and so do Chrome and Edge. But yeah it's easier to only support Edge, apply policies recommended by the company which also supplies the OS and productivity suite, and call it a day.
It's curious because Microsoft owns the operating system and was more than capable of designing in such a way that would allow sysadmins more control over third party browsers and software. Firefox would have been willing to work with them to provide the necessary levers. They already do with group policy.
"Security" is a term that shuts down arguments and silences all accusation of anticompetitive behavior. And they absolutely abuse that. You don't think the bean counters are ecstatic about the fact that they have effectively been able to turn every IT department in the country into Edge salesmen? You don't think there was a board meeting where the benefits of that were discussed?
Of course. I hate MS as much as the next linux user, but unfortunately from the IT team's pov it makes a lot of sense now that MS' browser isn't a broken pile of shit anymore.
Microsoft has been on a shameless crusade recently to make people adopt Edge. Upon launch, thier Bing AI had a rather absurd requirement to use Edge to access it.
There can be other reasons, and while it saddens me to say, we were forced to keep IE for specific web-panels, which hadn't been updated since the 90s.
Edge does, after all, allow for compability with such sites, which is a good thing.
Please note that this is work work-related machines only.
I dont see how it's an issue when it has to do with your work account. You shouldn't be using this for other things than work.
That's just because Edge is integrated with O365 and can pass device compliance information. There's actually a plugin to enable Chrome to do the same thing, but nothing yet for Firefox.
There's definitely ways to know if they really wanted to stop that, but those employees aren't going to pull something like that. They weren't just told they can't use Mozilla, they were told they must use Edge. Using anything else is noncompliance (which I absolutely support as a person but as an employee I have no say in the policy)
Besides, with the upcoming changes to 365, you'll never get links to open in anything but Edge without admin credentials at the very least, but realistically even that won't stop it. You could use a portable version I suppose, if just to have at least one browser with proper uBlock support.