Hello, thank you for reaching out to Microsoft Q&A.
I understand tha audio input (Microphone) is no longer working. To better assist you, let me know the following:
- May I know if it is a desktop or a laptop device? If it is a laptop, does your internal Microphone work?
- What is the default audio input device selected in the System Sound Settings? (Go to Start> Settings > System > Sounds > Choose your default input device)
- Do your speakers (Audio output) work normally?
- Did you test your microphone in default Windows apps like Sound Recorder app?