I am forced to use Chromium on my work laptop because MS Teams doesn’t work (all the features) on Firefox.

Which features I’ve never had an issue

Simple one-to-one calling is disabled saying it’s only available on Chrome. I’m pretty sure it’s recent since I had calls a few months back on Firefox. I’m also sure that it’s not some group policy since I’m on Ubuntu without any sort of ActiveDirectory so it’s a pure browser issue. Also, they force the old UI in Firefox due to some reason. Typical BS from Microsoft.

Does changing user agent mitigate some of those issues?

I’ve tried it today and yeah, 1-to-1 calls magically/unsurprisingly start working. In fact, the whole UI gets a facelift and lots of new features.

If I had to guess, I’d say Microsoft keeps around a version of their UI, which hasn’t been maintained in over a year, and serves that to anyone initiating communication with a user-agent string they don’t like.

If that’s true, that’s a massive security vulnerability. Admittedly, also unsurprising for Microsoft. @[email protected]