Using Microsoft Teams on macOS, including installation, features, and compatibility
Yes, the above solution worked perfectly. Thanks CFS!
There is definitely a programming flaw in MS Teams application for Big Sur update however you may bypass this issue by simply following the above mentioned steps which is :
Step1 - Open any previous our upcoming TEAMS meeting invite from your calendar or emails.
Step 2 - The pop-up will prompt you to open the TEAMS application - allow.
Step 3 - It will prompt you to sign-in if you are the meeting organiser
Step 4 - Sign-in with your login credentials
Step 5 - The pop-up will prompt for your permission to allow Camera and Microphone access.
Step 6 - You are all set.
Happy Teaming!