Microphone is not working in Windows

Establish the scope

Compare the Windows input meter with a recording in a trusted local app, then the original calling app. A working local recording with a silent call points toward that app selection or permissions. Failure everywhere calls for checking mute, input selection, connection, and the device before changing unrelated audio outputs.

Apply the safer fix first

Enable microphone and per-app access. Windows 11 places this under Settings > Privacy & security > Microphone; Windows 10 uses Settings > Privacy > Microphone. Then select the intended input in Sound settings and set a usable level.

Investigate the cause

Close apps that may hold the microphone, inspect the OEM driver, and use Sound Recorder or Voice Recorder—whichever name appears on the installed release—to isolate one app from Windows.

Protect the recovery path

Grant microphone access only to intended apps and respect managed privacy policy. Use a harmless sample and delete it afterward if it contains private speech.

Verification

• Record and replay a short sample using the intended microphone, checking clarity as well as meter movement.
• Repeat the original call or application test and confirm its selected input remains correct after reconnecting.

When to stop

Do not continue with broader resets when the device is absent, physically damaged, or managed policy blocks it. Preserve the observations already collected and use the device maker, network administrator, Microsoft support, a qualified repair technician, or data-recovery help according to the evidence.

Review the safe troubleshooting workflow before any broader recovery step.