“Can you hear me?” “No — you’re on mute.” “Can you hear me now?” It’s the most repeated ritual in modern working life, and the worst part is that the microphone was almost certainly fine. A microphone that “stopped working” is, nine times out of ten, a microphone that the computer or the app is ignoring. This is the order worth checking things in, from the quickest fix to the most annoying.
First, the two checks everyone skips because they feel too obvious
Look at the call screen. If the microphone icon has a line through it, you’re muted inside the app — tap it. It happens constantly: you muted yourself to cough during a meeting, the host muted everyone, or a shortcut key caught it. Unmute and ask someone to confirm they can hear you before you touch anything else.
Then check the hardware itself. If your headset has a mute button on the cable or the earcup, make sure it isn’t switched on — Microsoft’s own support page lists this as the first thing to check for a reason. If it’s a wired headset, push the plug firmly into the jack; a half-seated plug can carry audio out to your ears while the mic line stays dead. And if it’s a Bluetooth headset, confirm it’s actually paired and connected — a headset sitting in the “paired but disconnected” state is a classic cause of calls where you can hear everyone and nobody can hear you.
Your computer is probably listening to the wrong microphone
This is the single most common cause of mic trouble on computers. Your laptop has a built-in mic, your headset has one, your webcam might have one, and your Bluetooth earbuds add another. Windows and macOS both have to pick one, and they don’t always pick the one near your mouth.
On Windows 11, go to Settings > System > Sound and look at the Input section, where it says Choose a device for speaking or recording. Select the mic you actually want. Then click the arrow (>) next to it and hit Start test under Microphone test — speak at your normal volume and watch the bar. No movement, no input. You can also press Stop test and Play under Recorded sample to hear exactly what the computer is capturing.
On a Mac, open System Settings > Sound and click the Input tab. Select your mic from the list and speak — the input level meter should dance. If it barely moves, the Input volume slider is set too low.
The Bluetooth trap deserves special mention: the moment your wireless earbuds connect, many computers quietly switch both playback and the microphone to the earbuds — and then route the mic from a device sitting in a case on your desk or across the room. If your audio was fine until you paired something new, this switch is almost certainly what happened. (Unrelated but worth knowing: those same earbuds have their own set of drop-out quirks when they get too far away or fight interference.)
The app might not be allowed to hear you at all
Modern operating systems gate microphone access behind privacy permissions, and it’s very easy for an app to end up on the wrong side of them — especially after an OS update or a reinstall. The call app can be perfectly configured and still get total silence.
On Windows 11, open Settings > Privacy & security > Microphone. Make sure Microphone access is on, Let apps access your microphone is on, and — the one people miss — Let desktop apps access your microphone is on. Desktop programs like Zoom and Teams run through that third toggle, and if it’s off, no setting inside the app will help.
On a Mac, go to System Settings > Privacy & Security > Microphone and confirm your call app has its toggle on. On an iPhone, it’s Settings > Privacy & Security > Microphone, where each app gets its own switch — an app you said “Don’t Allow” to months ago stays denied until you flip it back. On Android, open Settings > Apps, pick the app, and check its Permissions to confirm microphone access is allowed.
If it works everywhere except one app, the problem lives inside that app
This one is easy to misdiagnose as a broken mic: your voice records fine in every other program, but on Zoom you’re a mime. When that happens, the call app has its own microphone setting — separate from the operating system’s — and it’s pointing at the wrong device.
In Zoom, open the app’s settings (the gear icon), go to the Audio tab, and look at the Microphone dropdown. Pick the right mic, then click Test Mic and speak — Zoom records you and plays it back so you can hear what everyone else hears. While you’re there, there’s a checkbox for Automatically adjust microphone volume. It usually helps, but if your voice keeps fading in and out on calls, try turning it off — the automatic levelling is what causes that pulsing effect.
Teams, Google Meet and the rest keep their own pickers too, usually behind a settings gear before or during the call. If the app offers a built-in test — Zoom’s Test Mic, or joining a call with only yourself — use it. Testing inside the app tests the whole chain, not just the part Windows can see.
The mic might simply be turned down to almost nothing
Quiet is not the same as dead. If people say they can barely hear you, or you sound like you’re calling from another room, the input level is probably just too low rather than broken.
On Windows, the same Sound page from earlier shows a volume slider next to the input device — make sure it isn’t sitting near zero. On a Mac, drag the Input volume slider up in System Settings > Sound > Input while speaking, and stop when the meter peaks at a healthy level without slamming to the top. In Zoom’s Audio settings, the slider under Microphone does the same job for the app specifically. Fixing “too quiet” takes ten seconds once you know the slider exists; most people never find it because it’s buried one screen deeper than they looked.
When it’s actually the hardware
If you’ve done all of the above and the test bars still don’t move anywhere, it’s time to suspect the mic itself — but test cheaply before spending anything. Record yourself in a different app: Voice Recorder (called Sound Recorder on some Windows versions) on a PC, Voice Memos on an iPhone or Mac. If a cheap pair of earbuds with a built-in mic works where your main headset doesn’t, the headset’s mic is the problem, not your computer.
On phones, check the microphone hole — it clogs with pocket lint the same way charging ports do. A dry soft brush or a careful puff of air usually clears it; don’t poke anything metal in there. And if a headset mic worked for a year and now cuts out when the cable flexes near the plug, that’s a broken wire, not a setting — no software fix exists for it.
One last thing: if the video side of your calls looks as rough as the audio sounds, a bad-looking webcam has its own set of fixes worth working through next.
Microphone problems feel technical, but the pattern is almost always the same: a mute nobody noticed, the wrong mic selected, or an app that lost permission. Run the checks in this order and you’ll find it — the hardware itself is the culprit far less often than it gets blamed for.
