You’re saying they have some sort of app that actively blocks firefox from running on their laptop? I fortunately never worked in a company that did something like this. I would say it’s more likely that the web application simply checks user agent and blocks unsupported browsers.

It’s called Microsoft Company Portal and it’s the worst

Yes, companies have software running on company property usually that checks what you’re running and installing. I can’t even get admin perms on my work machine without asking IT with a good reason. They can also see your browser history and what websites you go to, as an fyi to not browse anything that you wouldn’t feel comfortable talking to your boss and HR about on a work machine.

I know of people that also had a no activity log, just in case you didint input something on your PC for 2 min

Yeah that is also done in some places but afaik it’s not legal to do so in most places without letting you know what is being monitored. It’s a pain in the ass

I once saw a company block Firefox through its corporately mandated antivirus software.