Install Microsoft Teams

wget https://packages.microsoft.com/keys/microsoft.asc -qO-| sudo apt-key add -
sudo sh -c 'echo "deb [arch=amd64] https://packages.microsoft.com/repos/ms-teams stable main" > /etc/apt/sources.list.d/teams.list'
sudo apt update
sudo apt install -y teams

Ansible

cat < /tmp/teams.yml
---
- hosts: localhost
  tasks:
    - name: Add teams APT key
      apt_key:
        url: https://packages.microsoft.com/keys/microsoft.asc
      become: yes

    - name: Add teams repository
      apt_repository:
        repo: "deb [arch=amd64] https://packages.microsoft.com/repos/ms-teams stable main"
      become: yes

    - name: Install teams
      apt:
        update_cache: yes
        name: teams
      become: yes
EOF

ansible-playbook /tmp/teams.yml --ask-become-pass

Install by snap

sudo snap install teams

2Factor authentification
# Google Authentificaor
https://mysignins.microsoft.com/security-info
https://blog.paranoidpenguin.net/2018/06/office-365-multi-factor-authentication-with-google-authenticator/

# Microsoft Authenticator for Android
https://play.google.com/store/apps/details?id=com.azure.authenticator

Webclient
https://teams.microsoft.com

Links
https://docs.microsoft.com/de-de/microsoftteams/get-clients