Starting today, Microsoft Teams is available for Linux users in public preview, enabling high quality collaboration experiences for the open source community at work and in educational institutions. ...
Updated Nov 09, 2023
Version 4.0
Blog Post
ikelike88: OK I think I figured it out. Teams will only accept URIs formatted like: msteams://teams.microsoft.com......
You can test this by running this from the command line: "teams msteams://teams.microsoft.com......"
Should get you directly into a meeting.
I believe this means that the MimeType specified in teams.desktop is incorrect. In any case, making these two edits should make it so that xdg-open works with Teams:
/usr/share/applications/teams.desktop:
[Desktop Entry]
Version=1.0
Type=Application
Name=Microsoft Teams - Preview
Comment=Microsoft Teams for Linux is your chat-centered workspace in Office 365.
Exec=/usr/bin/teams %U
Icon=teams
Terminal=false
StartupNotify=true
StartupWMClass=Microsoft Teams - Preview
Categories=AudioVideo;Network;
# Change the MimeType to msteams instead of teams. Leave everything else the same.
MimeType=x-scheme-handler/msteams;
X-KDE-Protocols=teams
~/.config/mimeapps.list
[Default Applications] x-scheme-handler/msteams=teams.desktop
And then, as you mentioned, you have to rewrite "https" to "msteams" in meeting join URLs. In Google Chrome I used Requestly, and set up a "Replace Host" rule as follows:
Replace https://teams.microsoft.com with msteams://teams.microsoft.com
Edit: I've posted this issue in more of a bug-report format on the Q & A site: https://docs.microsoft.com/answers/questions/3401/mimetype-in-teamsdesktop-seems-to-be-incorrect.html