MicSwitch tool lets users mute or unmute their system microphone using a predefined system-wide hotkey. So, any program that uses a microphone can be stopped in an instant. Launch MicSwitch.

Additionally, many communication apps, such as Zoom and Microsoft Teams, allow you to mute the microphone via their in-app ...

such as communication apps (Zoom, Skype) or audio enhancement software, can sometimes change your microphone behavior. These can adjust volume levels or mute settings based on their configurations.