How to disallow an external program to handle a certain protocol

[Sun-Serega]

Sun-Serega last edited by

Hello. I was using the desktop version of Teams for a while but got fed up with pop-up notifications and taskbar flashing and not autohiding.
Now I mostly use the web version. And I keep the desktop version in case their in-browser whiteboard breaks again.

The problem is that when I open links like this:
https://teams.microsoft.com/l/meetup-join/...
The .js on that page calls the msteams:// protocol which automatically opens the Desktop Teams, lagging out my PC and breaking the taskbar (it stops autohiding, even after closing Teams... Tho I have ways to fix that).

I know when I first clicked such a link a long time ago - an opera pop-up asked me if I want to allow Teams to handle the msteams:// protocol and I marked "always allow".
How can I now revert this "always allow" checkmark for the msteams:// protocol? I would prefer not to reset all my settings just for that...