[WindowsCentral.com]

Is your microphone not working on Microsoft Teams? If so, in this guide, you'll find multiple ways to fix this problem on Windows 10.
If the microphone isn't working on Microsoft Teams, you have multiple ways to troubleshoot and fix the problem on Windows 10. While the app provides a useful system to communicate and collaborate with other people, it has its flaws, and you'll eventually stumble upon issues due to a number of factors.

Full story from the WindowsCentral blog...