Fix: Microphone Not Working During Calls or Recording
When your microphone is silent, scratchy, or only intermittently captures audio, this calm walkthrough takes you through the fixes that solve most cases.
Permissions Have Become a Common Culprit
Modern operating systems have privacy controls that block apps from accessing the microphone unless you explicitly allow it. On Windows, check Settings → Privacy & Security → Microphone, and confirm both 'Microphone access' and the specific app are allowed.
On macOS, go to System Settings → Privacy & Security → Microphone. The same logic applies: if the app is not ticked, it cannot capture sound.
- Check OS privacy settings for microphone access
- Confirm the specific app has been granted access
- Restart the app after changing permissions
Default Device and Volume Levels
The microphone may be detected and permitted but set to silent or muted. In Windows Sound settings, click the microphone and check the input level — a slider near zero will look like 'no microphone' to most apps.
If multiple microphones are present (built-in array, USB headset, webcam mic), make sure the right one is set as the default. Apps usually use the OS default unless their own settings override it.
Driver and Hardware Checks
If permissions and levels are fine, look at the microphone driver in Device Manager. Update or reinstall it the same way you would any audio driver. Generic Windows HD Audio drivers sometimes lose advanced microphone features that the manufacturer's driver provides.
Finally, test the microphone on another computer or in a different app. If it works elsewhere, the issue is software-specific. If it fails universally, the microphone hardware itself may be at fault.
Quick Answers
Frequently Asked Questions
The questions readers send us most often on this topic.
App-level permissions or per-app input device settings. Each app remembers its own preferred microphone.
Occasionally yes, by changing privacy defaults. Re-checking permissions after a major update is sensible.
Driver-level features like noise suppression and acoustic echo cancellation. They live in the manufacturer's audio driver, not the generic one.
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