Open Teams App from Outlook Meeting Invite

DevonM 

There is a solution to this issue.

The problem is that Edge seems to block the processing of links to the Teams app unless you explicitly tell it to trust teams. This is done by setting the policy URLAllowList with the value msteams://*    You can set this policy through the group policy editor, or directly in the registry if your machines are not AD managed. 

We have not seen the issue in Chrome or other browsers, but if others do experience the same in their version of Chromium, adding the msteams://* to the equivalent of URLAllowList will do the same trick.

The fix solves the issue of Outlook links pausing at the browser, but not the fact that a tab is opened with the Launcher page on it. This tab does not go away, until manually removed by the user - annoying! To resolve this I have created a little Chromium based browser extension that will close the Teams (and BlueJeans) launcher page after it has done its work. If the browser has no other tabs then it is closed as well, so the user does not even notice that Outlook opened the browser or tab. 

I'll be publishing the extension in the Chrome store shortly. Look out for an extension written by Rubber Duck Software.  If you are interested in knowing more contact me for details!